Waterproof Hibernating Asset Tracking Device
Product Description: 


The GL505 is a waterproof GNSS tracker that is designed for fixed asset tracking applications. The model is powered by an internal battery pack allowing more than 1800 days standby time. It supports a flexible switch between continuous mode (real time monitoring) and power save mode which periodically confirms asset status.


  • Waterproof, IPX7 compliant
  • Low power consumption, long standby time for more than 1800 days
  • Internal u-blox chipset
  • Quad band GSM/GPRS 850/900/1800/1900 MHz
  • Embedded @Track protocol
  • Internal 3-axis accelerometer for motion detection

  • Internal GSM antenna
  • Internal GPS antenna
  • CE/FCC/ANATEL certified


GSM Specifications


Quad band: 850/900/1800/1900 MHz

Compliant to GSM phase 2/2+

-Class 5 (0.8W @ 850/900 MHz)

-Class 1 (1W @ 1800/1900 MHz)


GPRS multi-slot class 8

GPRS mobile station class B

RMS Phase Error 5 deg
Max RF Output Power

GSM850/GSM900: 29.0±2 dBm

DCS1800/PCS1900: 30.0±2 dBm

Dynamic Input Range -15 ~ -108 dBm
Receiver Sensitivity Class Ⅱ RBER 2% (-107 dBm)
Stability of Frequency < 2.5 ppm
Max Frequency Error

±0.1 ppm


GNSS Specifications

GNSS Type u-blox All-In-One GPS receiver

Autonomous: -147 dBm

Hot start: -156 dBm

Reacquisition: -160 dBm

Tracking: -162 dBm

Position Accuracy

Autonomous: < 2.5m

TTFF (Open Sky)

Cold start: 27s average

Warm start: 27s average

Hot start: 1s average



GSM  Antenna Internal only
GNSS Antenna Internal only
LED Indicators GSM, GNSS, PWR
Serial Port  Internal 8 pin connector for upgrading and debugging


General Specifications

Dimensions 118mm(L) x 69.5mm(W) x 26.8mm(H)
Weight 140g (with batteries)
Batteries CR123A lithium manganese dioxide battery pack, 1500 mAh, 9V
Standby Time

Standby current: < 10 uA

SMS count: 1950 SMS

SMS reporting standby:

     1 SMS report per day: 1950 days

TCP reporting standby:

    1 report per day: 1800 days

    4 reports per day: 510 days

    5 minutes’ reporting: 11 days

Waterproof IPX7 compliant



-20℃ ~ +60℃


Air Interface Protocol

Command Set

@Track protocol commands

Simple SMS commands 

Transmit Protocol TCP, UDP, SMS
Working Mode 

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 5 internal geo-fence regions
Low Power Alarm Alarm when battery is low
Motion Detection  Motion alarm trigger and optional change of working mode
Wakeup Report  Report when the device wakes up