GPS Receiver Module with RS-485, supports NEMA, DCON and Modbus/RTU protocols


GPS Receiver Module with RS-485, supports NEMA, DCON and Modbus/RTU protocols

  Price:  $479.00  


  • Support 32-channel GPS and NMEA v0183 (Baudrate 9600 bps
  • RS-485 supports DCON protocol and Modbus RTU
  • RS-232 supports NMEA v0183 format, DCON or Modbus RTU protocol
  • Built-in 1 channel DO, 1 channel PPS(1 pulse per second), 1 RS-485 port, 1 RS-232 port
  • PPS: 100 ms pulse output/sec for precise timekeeping and time measurement
  • 10 ~ 30 VDC – (Power reverse polarity protection)
  • With various system LED indicators
  • DIN Rail design



The GPS-721U-MRTU, a new GPS solution for Remote GPS Receiver module in ICP DAS, featuring high sensitivity, low power consumption and ultra small form factor with DCON, Modbus RTU and GPS protocols. This powerful item provides you with superior sensitivity and outstanding performance even in the harshest environment.The GPS-721U-MRTU provides extra 1 channel DO and 1 channel PPS for users PPS signals can be used for precise timekeeping and time measurement. One can combine the PPS functionality with another as time synchronization source. Therefore, the GPS-721U-MRTU can be a powerful GPS remote module as well as a general purpose GPS module with RS232 interface. It can also be applied in Automotive navigation, Personal positioning and navigation, Marine navigation, Satellite time correction and etc…


  • Automotive navigation
  • Personal positioning and navigation
  • Marine navigation
  • Satellite time correction
  • Precise timekeeping and time measurement


Reference & Support


LED Indicators
Status 1 x Power/Communication
3 x GPS
Acquisition Time Cold Start (Open Sky) = 29 s (typical)
Chip u-Blox solution
Frequency L1 1575.42 MHz, C/A code
Max. Altitude <50,000 m
Max. Velocity <500 m/s
Position Accuracy Autonomous: 2.5 m
SBAS: 2.0 m
Protocol NMEA 0183 (Baudrate 9600 bps)
Sensitivity Tracking: Up to -161 dBm
Cold start: Up to -148 dBm
Support Channels 56
1 PPS Pulse per second output (Default 100 ms pulse/sec)
Digital Output
Channels 1 (Sink)
Type Non-isolated Open Collector
Load Voltage +5 VDC~ +30 VDC
Max. Load Current 100 mA
COM Ports
Ports 1 x RS-232 (GPS information output)
Input Range +10 VDC ~ +30 VDC (Non-regulated)
Consumption 2.5 W
Casing Plastic
Dimensions (mm) 72 x 117 x 35 (W x L x D)
Weight 200 g
Operating Temperature -25 ~ +75°C
Storage Temperature -40 ~ +85°C
Humidity 5 ~ 95% RH, Non-condensing

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