Industrial Cellular Modem Serial Port RS232 RS485 To GSM GPRS DTU Converter

Description:
Introduction of RS232 / RS485 GSM Modem
USR-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 USR-GM3. Clients can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.
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

Network


Standard

GSM / GPRS

Rate

14.4 Kbps ~ 57.6 Kbps

Standard Frequency Range

850/900/1800/1900MHz

GPRS Multi-slot Class

GPRS Class 10

GPRS Terminal Device Class

Class B

GPRS Coding Schemes

CS1 ~ CS4

Max Launch Power

GSM900 class4 (2W), DCS1800 class1(1W)

Application

GSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission

Network Protocol

TCP, UDP, DNS, Http

Network Link Count

4

Disconnection Buffer

4 x 15K bytes

Network Receive Buffer

4K byte

Serial


Port Number

2 (1*RS-232, 1*RS-485, can not work at the same time)

Interface Standard

RS-232: DB9 cellular type, RS-485: 2 wire (A+, B-)

Data Bit

5, 6, 7, 8

Stop Bit

1, 1.5, 2

Check Bit

None, Even, Odd

Baud Rate

UART: 2400 bps ~ 921600 bps

Flow Control

RTS/CTS

Receive Buffer

4K byte

RS-485 Pull-up and Pull-down Resistor

2.2 KΩ

Device Interface


Antenna Interface

50Ω/SMA-K (female terminal)

SIM Card

1.8V / 3V

Speech Interface

Null

Software


Virtual Serial（USR-VCOM）

Windows 2000 or higher (32 bit/64 bit)

Configuration

Serial AT command, network AT command, SMS AT command

Basic Parameter


Size

80x 84 x 25（mm）

Operating Temp.

-25 ~ 85°C

Storage Temp.

-40 ~ 125°C

Input Voltage

DC 5 ~ 36 V

Working Current

Average: 22 ~ 45mA, Max: 201mA

More


Warranty

2 years

Accessory

12V1A power, serial line, GPRS sucker antenna


Functions of RS232 / RS485 GSM Modem
Network Transmission
Bidirectional transparent transmission between modem and network

HTTPD Client
Support serial data HTTP(GET/POST) to submit to the specified server.
SMS Transmission
To achieve transparent communication between mobile phones and serial devices.

At Command
Support AT command query and set the parameters via- serial, network, SMS.
Application of RS232 / RS485 GSM Modem
Data Acquisition of Intelligent Electricity
Real-time Data Transmission of Charging Piles
Environmental Monitoring of Agricultural Networking
Real-time Data Collection of Urban Public Transport
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

Package Included:
1 x Modem Converter