TruTrak GPS LED Lighting Guide

Wired GPS Devices

Not sure what the lights on your GPS tracker mean? This guide explains the LED lighting sequences on TruTrak GPS devices. Each light pattern indicates the status of key functions such as power, GPS lock and network connectivity. Use the previews below to quickly diagnose what your device is doing.

FMT100 GPS Tracking Device & Other Teltonika Devices

FMT100 gps green flashing led light

GPS/GPSR LED Signal

Two flashing LEDs indicate that your GPS device is actively establishing a connection with both GPS satellites and the network. This means the device is in the process of syncing location data and preparing for full functionality.
FMT100 gps green led light

GPS/GPSR LED Signal

If you see one flashing LED and one solid LED, it means the device is unable to establish a GPS connection. To fix this, move the device to an area with a clearer view of the sky so it can acquire a signal and start tracking its position.

GV57 GPS Tracking Device

GV57 gps green fast flashing led light

Network LED Signal

A fast flashing green LED indicates that the device is searching for a mobile network connection. This is necessary for sending location data once a GPS signal is acquired.


GV57 gps green slow flashing led light

Network LED Signal

A slow flashing green LED indicates that the device has successfully connected to the mobile network and is ready to transmit data.
GV57 gps green led light

Network LED Signal

A solid green LED indicates that there is an issue with the device’s SIM card. To resolve this, please contact customer support for assistance.
GV57 gps red fast flashing led light

GPS LED Signal

A fast flashing red LED indicates that the device is searching for a satellite (GPS) connection. This is part of the startup process before accurate location tracking can begin.
GV57 gps red slow flashing led light

GPS LED Signal

A slow flashing red LED indicates that the device has encountered a data error. This may affect location reporting or communication, and troubleshooting or support may be required. Please contact our office.
3D_GV57_RSolid_1

GPS LED Signal

A solid red LED indicates that the device has successfully acquired a GPS signal and is ready to begin tracking.

FMB920 GPS Tracking Device

FMB920 gps green flashing led light

GPS/GPSR LED Signal

When you see two flashing green LEDs, it means the device is searching for both GPS (satellite signal) and GPRS (network connection). The device is in the process of establishing both connections to function properly.
FMB920 gps green led light

GPS/GPSR LED Signal

When both green LEDs are solid, it means the device has successfully connected to both GPS (satellite signal) and GPRS (network connection), allowing it to track and transmit location data.

FMT200 GPS Tracking Device

FMT200 gps red blue fast flashing led light

GPS/GPSR LED Signal

When either LED is flashing, the blue LED means the device is searching for a GPS signal, while the red LED indicates the device is searching for a network connection. Both LEDs flash while the device is attempting to establish a connection for accurate location tracking and data transmission.
FMT200 gps red blue led light

GPS/GPSR LED Signal

When either LED is solid, the blue LED means the device has successfully acquired a GPS signal, while the red LED indicates that the device has successfully connected to a network. Both LEDs show that the device is now ready to track and transmit location data.

FMT300 GPS Tracking Device

FMT300 gps green fast flashing led light

GPSR LED Signal

A fast flashing green LED indicates that the device is initializing the GSM network connection. This is part of the startup process as the device prepares to connect for data transmission.
FMT300 gps green slow flashing led light

GPSR LED Signal

A slow flashing green LED indicates that the GSM network is functioning normally and the device is receiving signals properly, ensuring stable connectivity for data transmission.
FMT300 gps blue fast flashing led light

GPS LED Signal

A fast flashing blue LED indicates that the device is actively searching for a GPS signal. This is a normal part of the startup process as the device attempts to connect to satellites for accurate location tracking.
FMT300 gps red fast flashing led light

Power LED Signal

A fast flashing red power LED indicates that the device has a low or faulty battery. Charging the device as soon as possible is recommended to ensure proper operation.


FMT300 gps red slow flashing led light

Power LED Signal

A slow flashing red power LED indicates that external power is disconnected or turned off. The device may be running on internal battery power and should be checked to ensure uninterrupted operation.
FMT300 gps tracker led lights
Lights Not On or Not Flashing - What It Means:
If the green LED is not lit, it means the device has not found a network signal and cannot transmit data. If the blue LED is not lit, this suggests that the GPS has either gone into hibernation or is faulty and unable to establish a signal. If the red LED is not lit, this indicates an external power failure or an internal fault with the device, preventing it from powering on properly.
When all the lights on the device are solid and bright, it means the device has successfully established all necessary connections and is fully operational. The solid green LED indicates that the device is online and connected to the network. The solid blue LED shows that the device has located GPS and is actively tracking. Lastly, the solid red LED confirms that the device is powered on and functioning as expected. This state ensures the device is ready for reliable tracking and data transmission.
Note: If you are experiencing any problems with the lighting sequence of the device, please don't hesitate to contact our office for support. Our team is ready to assist you in resolving any issues you may encounter.