Cost-Effective Multi-Interface GNSS Tracker
Product Description: 

The GV56RS is a mini cost-effective GPS tracker designed for a wide variety of vehicle tracking applications. The model has multiple digital/analog I/Os, including a half duplex RS485 serial port and a 1-wire interface. Its built-in Bluetooth can be used for both data and voice transmission.


  • Compact Size
  • Half Duplex RS485 Serial Port and 1-wire Interface
  • Bluetooth 3.0 & BLE 4.0
  • OTA Control
  • Scheduled Timing Report
  • Geo-fences
  • Motion Detection

  • Driving Behavior Monitoring
  • Power On Report
  • Emergency Alarm
  • External Power Monitoring

  • Tow Alarm



GSM Specifications

Frequency Quad band GSM/GPRS 850/900/1800/1900 MHz

Compliant to GSM phase 2/2+

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

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


GPRS multi-slot class 10

GPRS mobile station class B

RMS Phase Error 5 deg
Max RF Output Power

GSM850/GSM900: 33.0±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

GNSS Specifications

GNSS Type MTK GNSS receiver

Autonomous: -148 dBm

Hot start: -163 dBm

Tracking: -165 dBm

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

Cold start: 32s average

Warm start: 30s average

Hot start: 1s average


Digital Input 1 positive trigger input for ignition detection
Digital Output 1 digital output, open drain, 150 mA max drive current
Configurable Input 1 input can be configured as an analog input (0V - 30V) or a negative input
1-wire Interface Support 1-wire temperature sensor and iButton driver ID
Serial Port 1 half duplex RS485 serial port
GSM Antenna Internal only
GPS Antenna Internal only
Bluetooth Antenna Internal only
LED Indicators CELL, GNSS

General Specifications

Dimensions 79.5mm(L) x 44.3mm(W) x 11.9mm(H)
Weight 60g
Internal Battery Li-Polymer, 170 mAh
Standby Time

Without reporting: 45 hours

5 minutes’ reporting: 30 hours

10 minutes’ reporting: 35 hours

Operating Voltage 8V to 32V DC
Operating Temperature

-30℃~ +80℃

-40℃ ~ +80℃ for storage

Bluetooth Support Bluetooth 3.0 (two-way voice communication) & BLE 4.0

Air Interface Protocol

Transmit Protocol TCP, UDP, SMS  
Scheduled Report Report position and status based on preset time intervals, distance, mileage or a combination of these settings  
Geo-fences Geo-fence alarm, support up to 20 circular and 20 polygon geo-fence regions  
Power On Report Report when the device is powered on  
Special Alarm Special alarm based on digital inputs    
Remote Control OTA control of digital output  
Motion Detection Motion detection based on internal 3-axis accelerometer  
Driving Behavior Monitoring Aggressive driving behavior detection, including harsh braking, acceleration, etc.  
Jamming Detection Alarm based on jamming detection  
Crash Detection Accident data collection for reconstruction and analysis  
Tow Alarm Alarm for tow event in ignition-off state