Product Name：GSM Modem RS232/485 | Serial GSM Modems
Industrial Serial to IP cellular GPRS modem which convert the serial data RS232/485 into IP data and then transfer to data center through GPRS 2.5G mobile network. USR-GPRS232-730 is based on USR-GM3. Can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.
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 httpsD mode
Support basic instruction set and extension instruction set
Hardware flow control RTS/CTS
Bidirectional transparent transmission between modem and network
Support serial data https(GET/POST) to submit to the specified server.
To achieve transparent communication between mobile phones and serial devices.
Support AT command query and set the parameters via- serial, network, SMS.
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 remote meter reading, substation monitoring, power line monitoring
street lamp remote monitoring management, pipe network remote monitoring, urban energy consumption monitoring
remote monitoring of oil-gas well, GPRS remote oilfield automation detection monitoring system, Gas pipe network monitoring system solutions
pollution sources monitoring, atmospheric environment monitoring, noise monitoring, dust monitoring
greenhouse remote monitoring and management, aquaculture monitoring management, agricultural water pump monitoring management
|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, https|
|Network Link Count||4|
|Disconnection Buffer||4 x 15K bytes|
|Network Receive Buffer||4K byte|
|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|
|Receive Buffer||4K byte|
|RS-485 Pull-up and Pull-down Resistor||2.2 KΩ|
|Antenna Interface||50Ω/SMA-K (female terminal)|
|SIM Card||1.8V / 3V|
|Virtual Serial（USR-VCOM）||Windows 2000 or higher (32 bit/64 bit)|
|Configuration||Serial AT command, network AT command, SMS AT command|
|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|
|Accessory||12V1A power, serial line, GPRS sucker antenna|
Monday to Friday 8:30-18:00 in Beijing time. Message us online for a quick response when we are on-work. Or you can leave a message. Our sales will contact you as soon as possible. You can get free technical support & professional support for your project on our technical support h.usriot.com. Get in touch with us via email at firstname.lastname@example.org. We want to help with any questions you have.
We will deliver goods as soon as possible after we received the order. The order generated on weekend and holidays will be handled after back. We ship the goods with the following carriers TNT, DHL, FedEx, UPS, shipping agent.
We provide one year's warranty of modules and two year's warranty of cellular routers, cellular modems, serial device servers for any reason. If you believe the item is defective and under warranty, please submit a Return or Exchange request on the product's support page, or contact us at email@example.com.