Signshine (An) Information industrial cdma modem evdo vpn ip modem S3326 CDMA2000 1X EVDO DTU

Signshine S3326 CDMA2000 1X EVDO DTU (Data Transfer Unit) is a kind of cellular terminal device with RS232/RS485 that provides data transfer function by public EVDO network.

Signshine CDMA 2000 1x EVDO IP Modem (DTU) adopts high-powered ARM9 CPU and embedded real time operating system, integrates all the commonly used protocols, such as TCP/IP/UDP and so on, from logical link layer to upper application layer protocols. It provides a secure, high speed, reliable wireless internet connection for customers and supports several ways that trigger DTU to be online, including SMS and data. It also supports double or several data centers.

This CDMA 2000 1x EVDO IP Modem (DTU) product 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.

Industrial Design

※Industrial high-powered embedded 32 bits CPU

※Industrial high-powered cellular module

※Real time OS with completely full TCP/IP protocol

※Strengthened PCB which follows the principle of 20H and 

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


※Industrial grade rigorous screened components

※Industrial power adapter, wide voltage power supply design,

  power range DC7-32 V, reverse-voltage and overvoltage


Stability and Reliability

Three-tier system protection, based on the system protection

  of software protection and WDT, It supports VWM Virtual 

  Man Watchfunction

SIM/UIM port: 15KV ESD protection

RS232/RS485/RS422 port: 15KV ESD protection

Housing: iron, providing IP41 protection, radiation protection,

  anti-interference, lightning protection design, special for outdoor

  harsh environmental application

All modules are certified by CGD/CE/FCC certificate

Support dynamic domain name(DDNS) and IP access to data


Design with standard TCP/IP protocol stack

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

High Performance

※TCP/UDP transparent data transfer, supports several work mode

Support APN and VPDN

Support DDNS and IP access to data center

Support double data centers for backup

Support several data centers

Support auto recovery mechanism, including online detect,

   auto Re-dial when offline to make it always online

Support multi online trigger ways, including SMS, ring

  and data.

Support link disconnection when timeout

Adopt smart online keeping technology to make sure that  

  DTU is always online

Support SMS backup and emergency report

Support RSA and RC4 encryption arithmetic

Standard AT command interface

Support telnet function

Support common MODEM function

Lower consumption design, sleep mode <1mA,standby

  mode <15mA, communication mode<35mA

Support console upgrade firmware

Support multi OS, such as WINDOWS, LINUX, SCO UNIX ect

Easy to Use                                         

Graphical configuration tool which provides fast configuration

   and bulk configuration

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

Compatible with third party software

Communication interface:RS232/RS485/RS422/TTL/USB




Various of DLL based on C#,VC,VB,DEPHI language,

  provide user guide

Checkout software, Serial debugging software, network speed

  detection software, provide a different level of debugging



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