UWB Q1 Frequently Asked Questions

• Creator Kit – for basic RTLS testing
  • 3 Anchors
  • 1 Listener
  • 1 Developer Tag (Dev Tag)
    → Suitable for those adopting RTLS (Real-Time Location System) for the first time or who want a basic setup for indoor testing.
• Creator Extension Kit – for advanced RTLS testing and experimentation
  • 4 Anchors
  • 1 Gateway
  • 1 Developer Tag
    → Recommended for users who want to go beyond simple location testing to experiment with service implementation, server integration, and more complex spatial layouts.

Creator Kit Q1 (fixed-anchor type)

Flow: [Tag] → [Anchor Q1] → [Listener or Gateway] → [Server] → [Monitoring Software]

• Tag (Q1-WT, Q1-AT, etc.): Attached to a person or object to perform real-time location measurement
• Anchor (Q1-AN): A fixed reference point that measures distance to the tag
• Listener (Q1-LS) or Gateway (Q1-GW): Transmits the distance data collected from anchors to the server
• Server and software: Processes the received data to calculate and visualize location coordinates
  • Local PC-based monitoring program
  • Web-based cloud service

The Q1 system is designed to build an RTLS infrastructure within a facility, and is suitable for tracking and analyzing the location of people and assets.

You can check the components and detailed descriptions of each product on the official GrowSpace website.

See the GrowSpace product lineup

Why is a reference anchor needed?

The GrowSpace UWB system manages communication between devices based on the PAN ID (UWB network identifier). Within a single network (PAN ID), there must be exactly one reference anchor (= Initiator) so that all devices can start distance measurement (a UWB session) in a synchronized state. The reference anchor doesn’t represent the reference coordinate for location — it marks the reference point in time for starting communication.

You can set the reference anchor easily from the Space-Lite/Cloud software or the configuration program; just make sure only one is set within the same network (PAN ID).

The reference anchor (Initiator) does not have to be at the (0,0) coordinate.

That said, setting the reference anchor to (0,0) is the generally recommended approach, for the following reasons.

Why the reference anchor is usually set to (0,0)

• In RTLS systems, the reference anchor is often designated to act as the origin of the reference coordinate system.
• Setting the reference point to (0,0) makes it easier to define the coordinate system for the entire space, and makes it more intuitive to understand the positions of the remaining anchors and tags.
• In particular, in a simple rectangular environment with 3 anchors, assigning coordinates like:
  • Reference anchor → (0,0)
  • Second anchor → (X,0)
  • Third anchor → (0,Y)

  helps with system interpretation and visualization.

When it doesn’t need to be (0,0)

• The reference anchor’s only functional role is to send the communication start trigger signal; it works regardless of its actual coordinate values.
• So if the installation environment or layout doesn’t allow placing the reference anchor at (0,0), you can place it elsewhere and set (0,0) at a different anchor or a virtual reference point.
• In that case, as long as the relative coordinate system among the anchors stays consistent, there’s no impact on positioning performance.

We generally recommend spacing anchors no more than 20m apart. Installing them too far apart can affect precision, so please adjust appropriately based on your test environment.

Installation guideline summary

Anchors should ideally be installed in open locations with a clear line of sight to each other. Mounting them on the ceiling or a high wall improves reception stability and coverage.

If possible, it’s best to avoid installing anchors near highly reflective materials such as metal or glass. UWB signals can be reflected or refracted by metal and glass, which can cause multipath interference and reduce location accuracy.

Recommended installation conditions:

• Avoid metal pillars and areas near elevators
• Prefer plain plaster or concrete walls over glass walls
• After installation, it’s recommended to compare actual distance measurements to verify communication performance

※ If you have no choice but to install in such a location, it’s best to check the actual positioning error, apply a correction value, or add supplementary anchors elsewhere.

The number of anchors you need depends on your goal.

• If you only need distance measurement (distance only), a single anchor is enough (it only calculates the distance to the tag).
• If you want accurate location measurement (RTLS), you need at least 3 anchors (2D coordinates are calculated using trilateration).
• For 3D location measurement (including the Z-axis), we recommend installing 4 or more. Accuracy and stability improve as more anchors are added.

Anchor coordinates must be entered manually based on actual distance measurements within the space, and coordinate accuracy determines the overall accuracy of the RTLS. The most common method is to set the reference anchor to (0, 0, Z), then measure the relative distance (X, Y, Z) to the other anchors with a tape measure or laser distance meter to calculate their coordinates.

• Measure distances based on the center of each anchor.
• The reference anchor doesn’t have to be at (0, 0) — you can choose a different reference point.
• We recommend measuring at least twice to improve accuracy.

Coordinates are entered in millimeters (mm). For example, if something is installed at a height of 2.5m, you should enter Z = 2500. Note that the Web Console and the RTLS calculation engine process values in mm, so be careful about unit errors.

You can, but measuring the actual space is more accurate. If you only enter values based on a floor plan, discrepancies between the plan and the actual structure, along with small differences in installation position, can increase RTLS error.

We recommend using an actual tape measure or laser distance meter and entering the coordinates after measuring.

The basic measurement range performance is similar both indoors and outdoors, but recommended anchor spacing differs due to the structural characteristics of each environment.

Installation guide by environment

• Indoor environments have more elements that reflect or block signals — walls, furniture, ceiling structures, etc. — so a tighter anchor spacing (within 15m) is recommended.
• Outdoor environments have fewer structures and are more open, so stable positioning is possible even with 20m spacing.

Yes. If you’re using the GrowSpace Mobile Kit (N1-CK-01), a UWB-enabled smartphone alone is enough to test distance measurement and location estimation. Without a separate physical tag, the smartphone itself acts as a tag, exchanging distance and direction data with the anchors and participating in real-time RTLS calculations.

To use this feature, the following conditions must be met:

• A UWB-capable smartphone (e.g., Galaxy S21+ or later, iPhone 11 or later)
• The GrowSpace Mobile app installed
• 3 or more powered N1 anchors installed
• Accurate anchor coordinates entered

RTLS (Real-Time Location System) location estimation requires more than just distance measurement — several conditions must be met for the location calculation to work. Please check the following:

1. Number of anchors
At least 3 anchors must be connected at the same time for RTLS location estimation to work. If 2 or fewer are connected, trilateration is not possible and the location cannot be calculated.

2. Whether anchor coordinates are entered
Each anchor’s coordinates (X, Y, Z) must be entered correctly in the app or system for location calculation to work. If coordinates are missing or entered incorrectly, RTLS calculation will not function.

3. Real-time session connection status
If some anchors aren’t connected in real time or have a weak signal, location estimation results may not appear. Check that the BLE connection or UWB session hasn’t been disconnected.

4. Test space settings
The RTLS feature requires you to specify the width/length (in meters) of the test space for grid-based location display to work. If the grid size setting is missing or set too small, the location may not display on screen.

If the location still doesn’t display even though all of the above are normal, please check your test environment for environmental factors (metal interference, reflections, etc.).

Both products have the same features and performance, but differ in their power supply method.

• Rechargeable: Can be charged via USB port and has a built-in battery, making it convenient to use wirelessly.
• Non-rechargeable: Has no USB charging circuit and requires an external power connection. Suitable for use in environments with a constant power supply, such as a fixed lab installation.

Rechargeable tags use the same hardware, but usage time varies depending on the intended use.

• Personnel tag (for tracking people): Usable for up to about 7 days. Time may vary depending on the location update interval (e.g., 1Hz, 10Hz).
• Asset tag (for asset/logistics tracking): Usable for up to about 70 days. Operates using a low-power transmission method, suitable for long-term operation.

※ Actual usage time may vary depending on the update interval, movement frequency, and transmission interval.

This is often caused by the power bank’s low-power cutoff feature.

Cause

• Power bank low-power cutoff feature: Some power banks automatically cut off output if the connected device’s power draw falls below a certain threshold, assuming no device is connected. UWB devices draw a large current momentarily at boot but consume very little power during normal operation, which can trigger the power bank to cut off output.
• Differences in power consumption between boards: Even with the same power bank, power consumption can vary between UWB boards, so some boards may stay on while others turn off.

Solutions

• Connect a smartphone at the same time: Connecting both the UWB device and a smartphone to the power bank at once maintains a steady power draw, improving power stability.
• Test with a regular power source: Check whether the same issue occurs when connected to a regular power source, such as a USB adapter or a PC’s USB port. If there’s no issue with a regular power source, it’s likely caused by the power bank’s low-power cutoff feature.

Up to 15 tags at 10Hz, or up to 150 tags at 1Hz, can be tracked simultaneously. (See “What is the data processing speed?” below for details.)

Yes. To configure the MQTT broker, connect the PC and the gateway with a USB-C cable, then enter the server address, port, topic, etc. directly on the built-in web configuration page.

The Gateway Q1 transmits MQTT data over a LAN (wired) or Wi-Fi (wireless) network.

LAN takes priority, and it automatically switches to Wi-Fi (2.4GHz only) if no LAN connection is available.

※ 5GHz networks are not supported.

Yes, this is possible. By default, location data is transmitted via MQTT in JSON format containing the X, Y, Z coordinate values. After receiving it, you can add a timestamp or process it into whatever format you need.

However, if you want to modify the JSON format itself as transmitted, gateway firmware customization is required, and additional costs may apply.

Data received via MQTT is structured in the following JSON format, and Tag or Anchor information is distinguished based on the gateway ID.

Tag data example

{
  "gatewayID": "GR209C",
  "tags": [
    {"id": "GR2eba", "panID": "0001", "x": -4.45, "y": -0.19, "z": -2.22},
    {"id": "GR1012", "panID": "0001", "x": -1.44, "y": 3.68, "z": 0.72}
  ]
}

Anchor data example

{
  "gatewayID": "GR209C",
  "anchors": [
    {"id": "GR2fcc", "panID": "0001", "initiator": false, "x": -5.45, "y": 2.58, "z": 0.00}
  ]
}

• gatewayID: The identifier of the gateway that received the data.
• tags / anchors: Separated by device type; each is sent as a separate packet under the same gatewayID.
• List order: tags and anchors are ordered by list index in the order the gateway periodically received them.
• Coordinate values (x, y, z): The device’s location coordinates. Units are in meters (m).

Location data is updated at up to 10 times per second (10Hz), and the gateway can process up to 150 transmissions per second. This means multiple tags can be processed quickly and reliably at the same time.

• At 10Hz: up to 15 tags processed simultaneously
• At 1Hz: up to 150 tags processed simultaneously

By default, it’s delivered in JSON format via the MQTT protocol. It includes the X, Y, Z coordinate values for each tag, and you can identify the sending gateway via the gatewayID.

You can process the received JSON data and integrate it with a web service, database, visualization system, and so on.

Yes, this is possible. Since the GrowSpace system operates over MQTT, you can receive and use the data from a variety of external development environments, such as Python, Node.js, and Java.

• Using an MQTT client, you can receive and analyze data in real time.
• API or SDK integration documentation is also available if needed.

The data currently provided by the system is already the X, Y, Z coordinate values calculated through the internal algorithm. So it’s difficult to consider this data as “raw data” in the general sense.

You can perform your own post-processing or analysis (pattern analysis, path estimation, etc.) based on the X, Y, Z coordinates, but implementing or recalculating a new positioning algorithm from that data is not feasible.

The GrowSpace system provides location data collected from actual devices in two ways.

1. MQTT data via the gateway

Location data received at the gateway is delivered via MQTT in JSON format. This data can be easily integrated with visualization systems, external servers, or analysis systems.

{
  "gatewayID": "GR1234",
  "tags": [
    { "id": "GR8a8", "panID": "0001", "x": -1.25, "y": 10.12, "z": 1.57 }
  ]
}

2. String data via the listener device

If you’re using a listener device, location data is delivered as a simple string format. This method is useful for low-latency streaming or high-speed analysis systems.

POS,0,08A8,-1.22,10.14,1.60,61,x0D
POS,0,08A8,-1.20,10.15,1.60,61,x0D

Freegrow’s UWB RTLS system data integrates with external systems or servers in two main ways, depending on the integration purpose and scale: direct serial communication, and network-based MQTT communication.

1. Network-based integration via the gateway (MQTT)

• Protocol: Uses the MQTT protocol.
• Data flow: Location data collected from UWB anchors and tags is sent to an MQTT broker (e.g., Mosquitto) via the gateway.
• Data format and subscription (topics): The transmitted data is in JSON format, with the following main topics:
  • uwb/gateway/devices/#: Real-time location coordinates (x, y, z) of tags, and anchor information
  • uwb/gateway/config/#: The gateway’s heartbeat and configuration information
  • uwb/gateway/start/#: Status information sent immediately after the gateway boots

2. Direct serial integration via a listener or tag (USB/UART)

• Hardware setup: Connect the listener or developer tag directly to a PC or embedded device (e.g., Raspberry Pi, Arduino) via USB/UART.
• Data collection method: The lep command outputs only location coordinates and a quality factor (QF) in CSV format, while lec outputs both distance and location information together.

3. Visualization integration via the digital map platform (API/SDK)

• REST API and JavaScript SDK are provided for easy integration with external web or mobile apps.
• Used for player location tracking in indoor survival games, geofencing for restricted zones, entry/exit event detection, and more.

Yes, this is possible. The GrowSpace system is designed to let you set multiple PAN IDs within a single physical space, so you can operate independent tracking groups by zone.

To operate the system by dividing it into zones, separate them by PAN ID. For example, you can assign PAN ID 0001 to Zone A and PAN ID 0002 to Zone B so they operate without interfering with each other.

You can also place separate anchors for each zone and configure them as zones within the system for more systematic operation.

Even if one anchor fails, location calculation can continue as long as 3 or more anchors remain operational. Since the GrowSpace system can perform location calculation with 3 or more active anchors, basic location tracking is maintained even if some anchors turn off or fail.

That said, depending on the failed anchor’s position and the overall layout, accuracy or coverage in some areas may be affected, so for important spaces we recommend installing 1–2 extra anchors as a buffer.

Yes, this is possible. The GrowSpace system provides real-time location data through an MQTT-based API. Each device transmits data on a unique MQTT topic, which developers can subscribe to in order to receive real-time location data.

MQTT topics used

• {projectId} is your API key value.
• {deviceId} is each gateway’s UWB ID, which serves as the device identifier.

If both the gateway and anchors are online but location calculation is unstable, check the following:

• First check whether the anchor coordinates match their actual installed positions (check for mapping errors).
• Check that the anchor height values are accurate.
• Review whether the anchor spacing is too narrow or too wide.
• Also check whether a tag is too close to the floor, or blocked by something like a metal case.

Even a small discrepancy between the mapped values and the actual installed positions can significantly increase location calculation error.

Not necessarily. GrowSpace Web is the easiest tool for configuration, but you can also configure devices directly via USB without an internet connection.

• Devices can be configured locally by connecting via USB.
• GrowSpace Web can be installed as a PWA (Progressive Web App), so it also works in offline environments.
• You can use it with confidence even in on-site locations where an internet connection is difficult.

Yes, GrowSpace provides basic positioning algorithm software.

There is no feature to apply or modify a separate algorithm — it’s a dedicated tool for viewing and visualizing the location data calculated by the device in real time.

GrowSpace products currently do not support user-initiated firmware updates. The latest stable firmware is installed at the time of shipment, and no separate update is needed for typical use environments.

If you suspect a firmware-related issue during use, the RTLS Service Support Team ([email protected]) can help with inspection or replacement.

On a 2D plane, at least 3 anchors are needed to calculate a tag’s location via trilateration, and for actual services we recommend installing 4–6 anchors per cell with some margin.

A narrow, long space like a corridor may be fine with 3–4, while an open space such as a large hall or a factory/logistics yard will have better accuracy and stability with a denser layout of 6 or more.

UWB signals themselves can reach vertically, but RTLS location calculation is typically designed around a single floor (a 2D plane).

To reduce cross-floor interference and unnecessary anchor signals, it’s common to set up an independent anchor group for each floor and manage each floor as a separate zone.

The Mobile Kit is a system that connects a smartphone to 3 or more anchor devices to measure precise location information.

• The smartphone finds and connects to anchors via BLE.
• Once connected, the smartphone’s UWB feature can receive distance and direction information in real time.
• The Android / iOS SDK also lets you process data directly within your own app.

Because the smartphone is the central component, installation is simple and you can start experimenting right away.

It’s useful when you want to quickly test RTLS without the burden of installation, or when you need indoor location-based experiments.

Main use cases:

• Hands-on training/workshops
• Collecting location data in a lab
• Test prototypes for app development
• Analyzing indoor asset movement paths

It’s especially well suited for short-term tests or PoCs.

It works reliably in indoor environments with a power supply.

Recommended environments:

• Offices, classrooms, labs, and similar spaces with electricity
• Open spaces with little radio interference

※ Anchors must be connected to a wired power source.

Indoors, you can expect accuracy within ±30cm. This can vary depending on the environment and installation method, but it’s sufficient precision for general training and testing purposes.

When you open the box, you’ll find the following components:

• 4 Mobile Anchors
• 4 C-type power cables
• SDK (developer kit) documentation
• 4 Z-brackets

This is a complete starter setup for RTLS testing in a small indoor space, with no additional purchases needed.

※ Depending on your experiment, you can also add more anchors or extend the sample SDK code.

Yes, the Mobile Kit can easily integrate with your own app or service through the GrowSpace SDK. In particular, the GrowSpace Android SDK integrates BLE- and UWB-based indoor positioning technology, with everything from hardware control to location estimation conveniently packaged into a single class (SpaceUwb).

Key Android SDK features:

• BLE + UWB distance measurement (ranging)
• RTLS-based location estimation (calculating x, y, z coordinates)
• Real-time device connect/disconnect event detection

The Mobile Kit supports multiple platforms so it can integrate across different operating system environments.

• Android: An official SDK (GrowSpace Android SDK) is provided, offering integrated control of BLE + UWB-based distance measurement and location estimation through a single class (SpaceUwb).
• iOS: Integration is possible using Swift-based BLE communication, with sample code provided for receiving location data and real-time monitoring.

Only smartphones with UWB capability can be used. Whether direction (azimuth, elevation) measurement is supported can vary by model.

Android devices

For the Galaxy series, only + or Ultra models generally support angle measurement. Some Google Pixel models are also included.

Representative supported models:

• Galaxy Note20 Ultra
• Galaxy S21+ / S21 Ultra
• Galaxy S22+ / S22 Ultra
• Galaxy S23+ / S23 Ultra
• Galaxy S24+ / S24 Ultra
• Galaxy S25+ / S25 Ultra
• Galaxy Z Fold2 ~ Z Fold5
• Some Pixel UWB models

iOS devices

Most iPhone 11 and later models automatically collect UWB direction information.

Representative supported models:

• iPhone 11 / 11 Pro / 11 Pro Max
• iPhone 12 ~ 14 series (including Pro)

A single anchor can connect to up to 5–6 smartphones at the same time. In other words, one anchor can measure the locations of multiple smartphones simultaneously.

The Mobile Kit (N1) anchor is not a rechargeable battery device — it’s a wired power device. In other words, it only operates normally while the power cable is connected.

It is not designed to run on a charge, and it doesn’t have a built-in battery. It needs to be used in an indoor environment with a power supply.

The Mobile Kit (N1) anchor uses a wired power supply via cable. It doesn’t have a built-in battery, so it must be used in a location with a power supply.

• Each anchor comes with one C-type cable, which you connect to a USB power adapter (5V/1A or higher) or a multi-port charger.
• The smartphone runs on its own battery, so no separate power is needed for it.

The Mobile Kit (N1) is simple to install and can run continuously for a long time, but it’s not suited for battery-powered or mobile/on-the-move use.

※ Use is limited in outdoor environments where a power connection is difficult.

This is a normal phenomenon that can occur due to the nature of UWB (Ultra Wideband) technology.

Causes

• Signal absorption: The human body has a high water content, which weakens UWB signals.
• Signal reflection: Metal, such as steel structures, strongly reflects UWB signals, which can cause large errors in distance measurement.
• Antenna directionality: Most phone UWB antennas are located on the back of the device and are directional, so reception becomes difficult if the antenna is facing away from the signal.

Solutions

• Remove direct obstacles: Make sure there are no obstacles — steel structures, the human body, walls, etc. — between the device and the phone.
• Keep distance from the body: It’s best to keep some distance between the device and the body during use.
• Adjust antenna direction: Rotating the phone so the UWB antenna faces the device can improve signal stability.

The Mobile Kit N1’s UWB anchor is designed as a wired-power device (connected to a power adapter), and running it on a rechargeable battery for mobile/outdoor use is not officially supported.

You can move it to different locations for indoor testing, but for stable ongoing operation we recommend a fixed installation with a constant power supply.

A low-power-designed power bank can also be used to enable outdoor use.

This is often caused by the power bank’s low-power cutoff feature.

Cause

• Power bank low-power cutoff feature: Some power banks automatically cut off output if the connected device’s power draw falls below a certain threshold, assuming no device is connected.
• Differences in power consumption between boards: Even with the same power bank, power consumption can vary between UWB boards, so some boards may stay on while others turn off.

Solutions

• Connect a smartphone at the same time: Connecting both the UWB device and a smartphone to the power bank at once maintains a steady power draw, improving power stability.
• Test with a regular power source: Check whether the same issue occurs when connected to a regular power source, such as a USB adapter or a PC’s USB port.

The SDK itself does not currently implement a low-pass filter — you would need to implement this feature yourself if needed.

• Check that the server has fully powered on (booting takes 1–2 minutes).
• Refresh the Wi-Fi list on your phone/PC, or turn Wi-Fi off and back on.
• If Q2-setup still isn’t visible after waiting 5+ minutes, please contact us.

• Check that your PC/phone is currently connected to the Q2-setup Wi-Fi network.
• Disable auto-connect for other Wi-Fi networks, then try again.
• Clear your browser cache and try again.

• Enter q2-server.local/wifi in your browser → click [Reset Wi-Fi]
• After resetting, start again from the server mini PC setup guide.

• Enter q2-server.local/wifi in your browser → click [Reset Wi-Fi]
• After resetting, start again from the server mini PC setup guide.

• Check the power bank’s remaining charge.
• Try replacing the C-to-A cable with a different one.
• Charge the power bank and reconnect.

If it still doesn’t turn on after the above steps, it may be an error state. Please contact us with the anchor’s serial number.

The battery level is at or below 10%. Charge or replace the power bank.

• This is possible, but the replacement must meet the following conditions:
• Supports a “Low Current Mode” or low-power mode feature
• Output of 5V or higher, and capacity of 10,000mAh or more recommended (equivalent to the included product)
• Has a USB-A output port

Be sure to check the above features in the product specifications before purchasing a replacement. Using a power bank without low-power mode support will cause the anchor to turn off frequently.

• This indicates the internet (network) connection is down.
• Check the LAN cable connection → check the switch/router status.
• For a Wi-Fi connection, reset it using the Q2 Kit app.

• Check that Bluetooth (BLE) is turned on on your phone.
• Move within 3m of the gateway and try again.
• Reboot the gateway’s power and try again after about 30 seconds.

• Default account: ID admin / PW admin
• Check upper/lowercase letters.
• If you’ve already changed the password, log in with the new password.
• If you’ve forgotten the changed password, log out and use the password reset option on the login page.

• First check your spam folder / promotions tab.
• Verify that the email address you registered is correct.
• If neither applies, contact customer support with your company name and the email address that should receive the account, and request that it be resent.

Calibration only succeeds when both the anchors and the gateway are in a normal state. If it still won’t proceed even though everything looks normal, check the following three things.

1. The final view wasn’t saved

This is the most common cause. Check the following items in order:

• Check that a reference anchor has been designated and saved.
• Check that all 4 anchors show a green LED (normal operation).
• Check that the gateway’s LED is solid green (communicating normally with the server).
• Click [Save final view] once more, then run [Calibration > Full Calibration] again.

2. The gateway LED changes to a slow red blink

This indicates the internet (network) connection is down.

• Common causes: office LAN/Wi-Fi outage, a loose or disconnected LAN cable, weak Wi-Fi signal, unstable gateway power
• Solution: Check the network environment until the gateway LED returns to solid green, resetting the gateway via the Q2 Kit app if needed, then run calibration again.

3. Anchor distance measurement fails

• A specific anchor is powered off, anchors don’t have a clear line of sight to each other (large metal structures, thick concrete walls), anchors are too far apart (over 50m), or an anchor LED is blinking red (error state)
• Solution: Check all 4 anchors’ LEDs (all should be blinking green for normal operation) → check the power bank of any anchor that’s off → confirm anchor spacing is within the recommended 5–30m → ensure a clear line of sight (LoS) → run calibration again after resolving the issue

Yes, it’s safe. A failed calibration doesn’t overwrite existing coordinates, so there’s no data loss from retrying. You can run it again as many times as you need after resolving the underlying issue.

If it keeps failing after multiple retries, please contact us.

• Check that the tag’s LED is blinking green (normal operation).
• Check that the tag is within the anchor/gateway’s coverage range.
• Check that the tag is registered in the [Tag Management] menu.
• Restart the monitoring software.

• Check that calibration completed successfully.
• Check that the map and anchor positions are correctly rotated/mirrored.
• Perform individual anchor position adjustment.
• If there’s a large metal structure or other obstruction between the anchor and the tag, consider adjusting the anchor position.

• Low tag battery: If the tag LED is blinking yellow, the battery is low → charge via USB-C
• At the edge of coverage: If the tag is at or outside the edge of the rectangle formed by the 4 anchors → adjust the work area to stay inside the rectangle, or consider adding more anchors
• Blocked by a large obstacle: If a large moving metal structure (forklift, steel plate, etc.) frequently passes between the tag and anchor, intermittently blocking the signal → raise the anchor installation height to secure a clear line of sight

If the issue continues even after checking the above, please contact customer support.

When the tag signal reflects off a wall or structure before reaching the anchor, the system may mistake the reflected path for the direct path and calculate a different location than the actual one. Adjust the anchor’s installation position to secure a clear line of sight (LoS) in the affected area, then wear the tag again and check whether it works normally. If this consistently happens in the same location, please contact us with the site floor plan.

While charging, the tag’s UWB and BLE communication automatically turn off, so positioning is temporarily paused.

This depends on whether the tag’s power was on or off when charging began.

• Charged while powered ON → automatically turns back on, appears on the map after 10–20 seconds
• Charged while powered OFF → the tag stays off; hold the power button for 3 seconds to turn it on manually

You can check the components and detailed descriptions of each product on the official GrowSpace website.

See the GrowSpace product lineup

A specific quote depends on the product configuration, quantity, and format (individual item / kit) you need, so please reach out to the RTLS Service Support Team ([email protected]) for a quote.

Both bank transfer and card payment are available. Let us know your preferred payment method when requesting a quote, and we’ll guide you promptly.

• In-stock products ship within 1–2 business days after payment is confirmed.
• Customized products or bulk orders may take an average of 5–7 days to prepare.
• For international shipping or special export conditions, we’ll provide separate guidance.

No, shipping is not charged separately. All GrowSpace products ship free of charge for domestic delivery.

GrowSpace primarily supports a self-installation approach based on installation guides and documentation. That said, paid installation consulting may be available for enterprise customers under certain conditions.

If installation feels daunting, please contact the RTLS Service Support Team ([email protected]). We’ll help guide you through an installation method suited to your site conditions.

Yes, testing is currently only available at Freegrow’s office in Busan. If you’d like to try it in person, please send us a test request by email.

Test request: [email protected] — our team will confirm a date and location and provide guidance.

Simple-change-of-mind refunds are available within 7 days of receiving the product. However, all of the following conditions must be met:

• The product must be unused
• There must be no missing components or exterior damage
• Electronic devices (tags, anchors, etc.) must show no sign of being powered on or used

Refunds may be limited if there are signs of use or damage. However, initially defective products may be exchanged or refunded under separate criteria.

For details, please refer to the product purchase terms or contact us through the customer support channels below.

• RTLS Service Support Team email: [email protected]
• RTLS Service Support Team phone: 070-4163-1849

GrowSpace products come with a 1-year free warranty from the date of purchase. The warranty coverage and notes are as follows:

• Basic warranty period: 1 year (from date of purchase)
• Covered: Manufacturing defects, failures occurring during normal use
• Not covered: User negligence (dropping, water damage, external impact, etc.), installation or use in a way that isn’t recommended, consumable items such as replaceable batteries

If warranty service is needed, an exchange or repair process will proceed after the product’s condition is checked.

• RTLS Service Support Team email: [email protected]
• RTLS Service Support Team phone: 070-4163-1849

1. Service overview

This service creates a custom map based on the customer’s request and delivers the finished map image as a digital file.

2. Basic refund policy

This service provides digital content (a map image file) and operates under South Korea’s Act on Consumer Protection in Electronic Commerce. Due to the nature of digital content, refunds are generally not possible once a download has started.

To protect your interests, we provide: a preview service (you can check a low-resolution watermarked version of the final map image beforehand), one free revision request after reviewing the initial result, and a detailed description (clear guidance on the map’s scope, style, and included elements before you use the service).

3. Cases eligible for a refund

• Service not provided: If map creation hasn’t started within 7 business days of payment, or the service isn’t delivered by the agreed delivery deadline
• Service defect: If the delivered map differs from the previously agreed specifications (size, resolution, file format, etc.), has a significant error (incorrect location info, missing requested content, etc.), or the file is corrupted and won’t open properly
• Payment error: Duplicate payment due to a system error, or an accidental duplicate purchase

4. Cases not eligible for a refund

• Download completed: If the final map image file has been downloaded, or received via an emailed download link
• Change of mind: Requesting a refund for simple change of mind after reviewing and approving the preview, or subjective differences in style/color preference
• Customer-caused issues: Errors in information provided by the customer, or issues arising from not clearly communicating requirements

5. Partial refund policy

If you ordered multiple maps but only downloaded some of them, a partial refund is available for the maps not downloaded. Refund amount = total payment − (number of downloaded maps × individual map list price); if a package discount was applied, the amount is deducted based on list price before refunding.

6. Refund process

1. Request a refund via customer center ([email protected]) or our KakaoTalk channel
2. Provide your order number, reason for refund, and payment information
3. Refund reason review (takes 1–2 business days)
4. Once approved, the refund is processed to your original payment method

Once approved, refunds are processed within 3–5 business days (card: 3–7 business days, bank transfer: 1–2 business days, Toss Money: instant). There is no fee for refunds due to a service defect or payment error; other reasons are subject to payment processing fees borne by the customer.

7. Dispute resolution

You may file a dispute with supporting evidence within 14 days of receiving a refund denial notice. If the parties cannot reach an agreement, the matter will be handled through mediation by the Korea Consumer Agency’s Consumer Dispute Mediation Committee or the Electronic Transaction Dispute Mediation Committee (www.ecmc.or.kr).

8. Special provisions

• First-time customers may request one refund within 24 hours of downloading (excluding cases of confirmed commercial use).
• In the event of a service outage caused by our system, a 100% refund will be issued; issues caused by the customer’s technical environment are not eligible for a refund.
• You may download the final result once immediately after payment; re-downloading is not available. Content revision requests can be made before payment, but neither revisions nor re-downloads are available after payment and download.

9. Amendments and notice

This refund policy is effective from January 1, 2025, and may be amended following prior notice in the event of changes to relevant laws or service policy. Material changes will be announced via in-service notices and email.

10. Contact

Email: [email protected]
Business hours: Weekdays 09:00–18:00 (closed on weekends and holidays)

This refund policy has been prepared in compliance with relevant laws, including the Act on Consumer Protection in Electronic Commerce and the Content Industry Promotion Act.