The GPS-721-MRTU/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-721-MRTU/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-721-MRTU/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…


Request For Quotation




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


    • 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


    Model GPS-721-MRTU GPS-721U-MRTU
    Digital Output
    Output Channel 1 (Sink)
    Output Type Non-isolated Open Collector
    Output Current 100 mA
    Load Voltage +5 VDC ~ +30 VDC
    GPS Receiver
    Chip MediaTek solution u-Blox solution
    Frequency L1 1575.42 MHz, C/A code L1 1575.42 MHz, C/A code
    Support Channel 66 56
    Position Accuracy Autonomous 3 m (2D RMS) 2.5 m
    SBAS 2.5 m (depends on accuracy of correction data) 2.0 m
    Max. Altitude <18,000 m <50,000 m
    Max. Velocity <515 m/s <500 m/s
    Acquisition Time Cold Start (Open Sky) = 33 s (typical) Cold Start (Open Sky) = 29 s (typical)
    Sensitivity Tracking Up to -165 dBm Up to -161 dBm
    Cold start Up to -148 dBm Up to -148 dBm
    Protocol Support NMEA 0183 (Baudrate 9600 bps) NMEA 0183 (Baudrate 9600 bps)
    GPS Output
    1 PPS Pulse per second output (Default 100 ms pulse/sec)
    RS-232 Interface GPS information output
    LED Indicators
    Power/Communication 1 LED
    GPS 3 LEDs
    Protection Power reverse polarity protection
    Frame Ground Protection Yes
    Required Supply Voltage +10 VDC ~ +30 VDC (non-regulated)
    Power Consumption 2.5 W
    Dimensions (W x H x D) 72 mm x 117 mm x 35 mm
    Weight 200 g
    Housing Plastic
    Operating Temperature -25 °C ~ +75 °C
    Storage Temperature -40 °C ~ +80 °C
    Humidity 5 ~ 95% RH, non-condensing

    Ordering Informations

    GPS-721-MRTU CR GPS Receiver and 1 DO, 1 PPS Output Module (RoHS)


    GPS-721U-MRTU CR GPS Receiver and 1 DO, 1 PPS Output Module (RoHS)




    GPS721_MRTU_User Manual_v200_EN



    GPS721U_MRTU_User Manual_v1.0_EN