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

900/1800MHZ

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-line
Output Power
Class 4(2W @ 900MHz)
Class 1(1W @ 1800MHz)
Input voltage 7V-36V DC
Input current 1A-2A

Standby current: 56mA

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

Storage temperature:-50 to +95 degrees

Size 85*54*25mm
Weight 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

USSD

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