Product no.: 552

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MSRP $185.00
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Delivery weight: 2.5 kg
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Part Number: GL505


GSM Specifications


Quad band: 850/900/1800/1900 MHz

Compliant to GSM phase 2/2+

-Class 4 (2W @ 850/900 MHz)

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


GPRS multi-slot class 10

GPRS mobile station class B

RMS Phase Error 5 deg
Max Out RF Power

GSM850/GSM900: 33.0±2 dBm

DCS/PCS: 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

GPS Specifications

GPS Chipset u-blox All-In-One GPS receiver

Autonomous: -148 dBm

Hot start: -160 dBm

Tracking: -162 dBm

Position Accuracy

Autonomous: < 2.5m

SBAS: 2.0m

TTFF (Open Sky)

Cold start: 30s average

Warm start: < 30s

Hot start: < 1s


GSM  Antenna Internal only
GPS Antenna Internal only
Internal Indicator LED GSM, GPS and battery status
Serial Port  Internal 8 pin connector for upgrading or debugging

General Specifications

Dimensions 118mm*69.5mm*26.8mm
Weight 105g (without batteries)
Batteries Two CR123A lithium batteries 1500 mAh
Standby Time

Standby current: < 10 uA

SMS count: 1000 SMS

SMS reporting standby:

         One SMS report per day: 1000 days

TCP reporting standby:

         One report per day: 950 days

         Four reports per day: 248 days

         Five minutes reporting: 4 days

Waterproof IPX7 compliant
Operating Temperature -20℃ ~ +60℃

Air Interface Protocol

Command Set

@Track protocol commands

Simple SMS commands 

Transmit Protocol TCP, UDP, SMS
Working Mode 

Power save mode, for long standby time

Continuous mode, for emergency tracking

Scheduled Timing Report Report position and status according to preset time schedules
Geo-fence Support up to 5 internal geo-fence regions
Low Power Alarm Alarm when internal battery is low
Motion Detection  Motion alarm trigger and optional change of working mode
Wakeup Report  Report when the device wakes up
For Complete Technical Support, Application Notes and Manuals, please visit:
Visit Eddy Wireless Technical Support Page
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