Overview

Signshine S3121 GPRS Modem is a kind of cellular terminal device with RS232 that 

provides SMS, dial-up and CSD function by public GPRS network.

GPRS RS232 Modem adopts high-powered industrial cellular module and supports 
RS232 port that can conveniently connect one device to a cellular network, allowing 
you to connect to your existing serial device.

GPRS RS232 SMS Modem has been widely used in M2M/SCADA field,such as power 
automation, transportation, financial service terminal, factory automation, water, oil&gas, 

large machine maintenance, environment, building automation, outdoor digital signage ect.

 

 

Features

 

Industrial Design:

Industrial high-powered cellular module

Strengthened PCB which follows the principle of 20H and 

3W,and adopts health benefits material to ensure the product  

stability

Industrial grade rigorous screened components

Industrial power adapter, wide voltage power supply design,

power range DC7V~DC32V, reverse-voltage and overvoltage

protection

Stability and Reliability:

GSM SMS Modem supports serial port I/O reset,offer DLL with control functions for I/O reset.

SIM/UIM port: 15KV ESD protection

RS232: 15KV ESD protection

Housing: iron, providing IP41 protection, radiation protection,

anti-interference, lightning protection design, special for 

outdoor harsh environmental application

All modules of GSM SMS Modem RS232 are certified by CGD/CE/FCC certificate

EMC&EMI outstanding performance, passed 3000V electrical shock test&EMC test

High Performance:

GSM SMS RS232 Modem supports to send and receive Chinese,English,number and SMS alarm

Support APN and VPDN

Offer VB/VC/C#/DEPHI  DLL for test,secondary development

Support to send bulk SMS

Support standard AT command

Support WINDOW/LINUX ect

Easy to Use:

Offer the software to send and receive bulk SMS

Offer Center software based on C#,VC,VB,DEPHI language

 

Typical Application

Tranformer Substation