• Description

    RS232 RS485 Serial to GSM Modem

    GPRS232-730 is a RS232 RS485 to GSM GPRS modem, which used for data transparent transmission based on 2G Network.

    • 1 RS232 serial port and 1 RS485 serial port (not use simultaneously)
    • Power: 5V~36V
    • Quad-Band GSM/GPRS 850/900/1800/1900MHz
    • Flow Control: CTS/RTS
    • Transparent mode(TCP/UDP)/HTTP client/SMS mode


    Introduction of RS232 / RS485 GSM Modem

    GPRS232-730 GSM Modem / GPRS DTU (Data Transfer Unit) is a wireless terminal equipment which can convert serial data to IP data or convert IP data to serial data through gprs /GSM network. 730 is based on GM3. Clients can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.

    Introduction of RS232 / RS485 GSM Modem

    Port of  RS232 / RS485 GSM Modem

    Port of RS232 / RS485 GSM Modem

    Features of RS232 / RS485 GSM Modem

    RS232 or RS485 interface, can’t be used at one time

    2G Frequency: GSM850/900,DCS1800/1900, 2G GSM/GPRS

    Work Mode: TCP and UDP Client

    Supports register packet and heartbeat packet

    Can be remote configurated via SMS

    Support multi work modes : SMS transmission mode,network transmission mode and HTTPD mode

    Support basic instruction set and extension instruction set

    Hardware flow control RTS/CTS

    Functions of RS232 / RS485 GSM Modem

    Network Transmission

    Bidirectional transparent transmission between modem and network

    Network Transmission of RS232 / RS485 GSM Modem

    HTTPD Client 

    Support serial data HTTP(GET/POST) to submit to the specified server.

    HTTPD Client of RS232 / RS485 GSM Modem

    SMS Transmission

    To achieve transparent communication between mobile phones and serial devices.

    SMS Transmission of RS232 / RS485 GSM Modem

    At Command

    Support AT command query and set the parameters via- serial, network, SMS.

    At Command, RS232 / RS485 GSM Modem


    Application of RS232 / RS485 GSM Modem

    Data Acquisition of Intelligent Electricity

    Data Acquisition of Intelligent Electricity, Application of RS232 / RS485 GSM Modem

    Real-time Data Transmission of Charging Piles

    Real-time data transmission of charging piles, application of RS232/485 GSM modem

    Environmental Monitoring of Agricultural Networking

    Environmental Monitoring of Agricultural Networking, application of RS232/485 GSM modem

    Real-time Data Collection of Urban Public Transport

    Real-time Data Collection of Urban Public Transport, application of RS232/485 GSM modem

    Power industry: power remote meter reading, substation monitoring, power line monitoring

    Municipal industry: street lamp remote monitoring management, pipe network remote monitoring, urban energy consumption monitoring

    Oil industry: remote monitoring of oil-gas well, GPRS remote oilfield automation detection monitoring system, Gas pipe network monitoring system solutions

    Environmental protection industry: pollution sources monitoring, atmospheric environment monitoring, noise monitoring, dust monitoring

    Agricultural application: greenhouse remote monitoring and management, aquaculture monitoring management, agricultural water pump monitoring management

  • Product Specification

    StandardGSM / GPRS
    Rate14.4 Kbps ~ 57.6 Kbps
    Standard Frequency Range850/900/1800/1900MHz
    GPRS Multi-slot ClassGPRS Class 10
    GPRS Terminal Device ClassClass B
    GPRS Coding SchemesCS1 ~ CS4
    Max Launch PowerGSM900 class4 (2W), DCS1800 class1(1W)
    ApplicationGSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission
    Network ProtocolTCP, UDP, DNS, Http
    Network Link Count4
    Disconnection Buffer4 x 15K bytes
    Network Receive Buffer4K byte
    Port Number2 (1*RS-232, 1*RS-485, can not work at the same time)
    Interface StandardRS-232: DB9 cellular type, RS-485: 2 wire (A+, B-)
    Data Bit5, 6, 7, 8
    Stop Bit1, 1.5, 2
    Check BitNone, Even, Odd
    Baud RateUART: 2400 bps ~ 921600 bps
    Flow ControlRTS/CTS
    Receive Buffer4K byte
    RS-485 Pull-up and Pull-down Resistor2.2 KΩ
    Device Interface
    Antenna Interface50Ω/SMA-K (female terminal)
    SIM Card1.8V / 3V
    Speech InterfaceNull
    Virtual Serial(USR-VCOM)Windows 2000 or higher (32 bit/64 bit)
    ConfigurationSerial AT command, network AT command, SMS AT command
    Basic Parameter
    Size80x 84 x 25(mm)
    Operating Temp.-25 ~ 85°C
    Storage Temp.-40 ~ 125°C
    Input VoltageDC 5 ~ 36 V
    Working CurrentAverage: 22 ~ 45mA, Max: 201mA
    Warranty2 years
    Accessory12V1A power, serial line, GPRS sucker antenna
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