Shenzhen Baihui Technology Co., Ltd.
Main products:GSM Modem,GPRS Modem,HSDPA Modem,CDMA Modem,GPS Modem
Contact Us
  • Contact Person : Mr. Lee Star
  • Company Name : Shenzhen Baihui Technology Co., Ltd.
  • Tel : 86-755-29968171
  • Fax : 86-755-29968070
  • Address : Guangdong,Shenzhen,2/F, 33 Gonghe Industrial Road, Gongle Industrial Zone, Xixiang Town, Baoan District,
  • Country/Region : China
  • Zip : 518102

RS485 GSM/GPRS modem SIM900A

RS485 GSM/GPRS modem SIM900A
Product Detailed
RS485 GSM/GPRS modem Based on Simcom module SIM900A With TCP/IP stack 900/1800MHZ STK,internet, data, sms,

RS485 GSM/GPRS modem

Product description

General Features

Industrial design

Aluminum casing

Wireless access to internet

Based on SIMCOM module SIM900A

With TCP/IP protocol stack


Comply with ETSI GSM phase 2+

1.8-3V SIM card slot

RS485 interface:

PIN 1 for 485+B

PIN 2 for 485 -A

SIM Application Toolkit

Double tone multi-frequency function (DTMF)

Send and receive data, SMS

GPRS Class 10

Antenna with high sensitivity

Always on-lineOutput PowerClass 4(2W @ 900MHz)Class 1(1W @ 1800MHz)Input voltage 7V-36V DCInput current 1A-2A

Standby current: 56mA

Working current: 100-140mAWorking temperature  -40 to +85 degrees

Storage temperature:-50 to +95 degrees

Size 85*54*25mmWeight 110g

Accessories: AC/DC adaptor, RS232 cable, antenna, 2 mounting plates, CD


Specification for Data

GPRS Class 10 max.85.6kbps(downlink

PBCCH support

Coding schemes CS 1,2,3,4

CSD up to 14.4kbps


PPP stack

Non-transparent mode

Transparent mode

Specification for SMS via GSM/GPRS

Point to point MO and MT

SMS cell broadcast

Text and PDU mode

Specification for Fax

Group 3, class 1

RS485 GSM/GPRS modem SIM900A

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