LTE Cat M1/NB1 Advanced Asset Tracker
Product Description: 

GL500 series (LTE) includes three waterproof GNSS trackers that feature an up to 7 years standby time powered by internal batteries. The series is ideal for a range of tracking applications that require real-time monitoring on temperature and light. GL500 series (LTE) supports LTE Cat M1/NB1 network on multiple bands for operation globally with a fallback to EGPRS.



  • Rapid and covert installation – no wiring, no external antennas
  • 7-year standby time with internal battery
  • Thumb-sized button is used for power on/off and working status checking
  • Motion detection based on internal 3-axis accelerometer
  • Automatic mode switching – power saving mode for long standby time and continuous mode for emergency tracking
  • Temperature monitoring based on internal temperature sensor
  • Tamper detection based on internal light sensor
  • Suitable for use with dog or other animal collars
  • Waterproof IP67 compliant
  • Optional magnetic mounting


Region Sub Model                     Certificate
North America GL500MA        PTCRB/FCC/Verizon/AT&T
North America GL500MG_S                     FCC/Sprint
Worldwide GL500MG FCC/Verizon/PTCRB/AT&T/CE (Planned)



LTE Specifications

Operating Band

Cat M1/Cat NB1:

LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25 */B28

LTE TDD: B39 (For Cat M1 Only)

Data Transmission

eMTC (DL) 375Kbps

eMTC (UL) 375Kbps

NB1 (DL) 32Kbps

NB1 (UL) 70Kbps

*B25 is supported on GL500MG_S

GNSS Specifications

GNSS Type u-blox All-in-One GNSS receiver

Autonomous: -147 dBm

Hot Start: -156 dBm

Reacquisition: -160 dBm

Tracking: -162 dBm

Position Accuracy (CEP) Autonomous: < 2.5m
TTFF (Open Sky)

Cold start: 27s average

Warm start: 27s average

Hot start: 1s average


Power Button Used for power on/off and working status checking
LTE Antenna Internal only
GNSS Antenna Internal only
LED Indicators GNSS, CEL

General Specifications

Dimensions 3.43’’(L) × 2.01’’(W) × 1.18’’(H)
(87 × 51 × 30mm)
3.43’’(L) × 2.01’’(W) × 1.32’’(H)
(87 × 51 × 33.5mm)
(magnetic case mounting version)

4.94oz (140g)
5.64oz (160g)
(magnetic case mounting version)

Backup Battery 3 CR123A lithium batteries, 1400 mAh  
Standby Time

Standby current: < 8 uA

1 report per day (GNSS on): 5 years

1 report per day (cell ID only): 7 years

Waterproof IP67 compliant  
Operating Temperature -25℃ ~ +60℃  
Internal Temperature Sensor

For temperature monitoring

Accuracy: ±0.5℃

Internal Light Sensor For tamper detection  
Internal Motor For vibration feedback after successful operation of function button  
Magnetic Mounting Case (Optional) For easy installation on metal surface  

Air Interface Protocol

Command Set @Track protocol command
Transmit Protocol TCP, UDP, SMS
Working Modes Power saving mode for long standby time
Continuous mode for emergency tracking
Scheduled Timing Report Report position and status at preset time intervals
Geo-fences Support up to 20 internal geo-fence regions
Low Power Alarm Alarm when internal battery is low
Wakeup Report Report when the device wakes up 
Motion Detection  Motion detection based on internal 3-axis accelerometer
Reporting Frequency Adjustment Intelligent adjustment of reporting frequency