Signshine S3321 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.

1. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
S3121 GPRS Modem
Technical Specification
www.signshine.cwww.signshine.cwww.signshine.cwww.signshine.cn/en/n/en/n/en/n/en/
厦门信辰信息科技有限公司
Xiamen SIGNSHINE Information Technology Co; Ltd

2. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
GeneralGeneralGeneralGeneral
Product Appearance
Side View Front View Back View
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.
It 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.
This 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.

3. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
ProductProductProductProduct FeatureFeatureFeatureFeature
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
※Support 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 are certified by CGD/CE/FCC certificate
※ EMC&EMI outstanding performance, passed 3000V electrical
shock test&EMC test
High Performance
※Support 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

4. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
CellularCellularCellularCellular SpecificationSpecificationSpecificationSpecification
Item Content
Cellular Module Industrial cellular module
Standard and Band EGSM900/GSM1800MHz , GSM800/900/1800/1900MHz(optional)
Compliant to GSM phase 2/2+,
GPRS multi-slot class 10 ,class 12 (optional)
Coding scheme CS1~CS4
Bandwidth Theory：171.2Kb/s；Actual：100Kbits>X>20Kbits/s
TX power GSM850/900：<33dBm；GSM1800/1900：<30dBm
RX sensitivity <-107dBm
Function Data, SMS

5. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
Interface
Item Content
Serial Port 1 RS232 port
Data bits: 7, 8
Stop bits: 1, 2
Parity: none, even, odd, space, mark
Baud rate: 110~230400 bps
Flow control：None、RTS/CTS hardware flow control or XON/XOFF software flow control
Indicator POWER,ACT and Online
Antenna Standard SMA female interface, 50 ohm, lighting protection(optional)
SIM/UIM Standard user card interface, support 1.8V/3V/5V SIM/UIM card, 15KV ESD protection
Voice Standard Earphone and Microphone port(Need software matched)
Power Standard 3-PIN power jack, reverse-voltage and over voltage protection
Power supply
Item Content
Power Range DC 7~32V
Standard Power DC 9V/500mA
Communication Current Average：90mA@+9VDC;Peak：1.0A@+9VDC
Standby Current Average：<15mA@+9VDC

6. 厦门信辰信息科技有限公司
XiamenXiamenXiamenXiamen SignShineSignShineSignShineSignShine InformationInformationInformationInformation TechnologyTechnologyTechnologyTechnology Co.,.LtdCo.,.LtdCo.,.LtdCo.,.Ltd
Address：905A,Block C2, No. 5 JinZhong Road, Huli District, Xiamen, China 361009 Phone：0592-5538731
Website：http://www.signshine.cn/en/ Fax ：0592-5597794
Physical Characteristics
Item Content
Housing iron, IP41 protection, radiation protection, anti-interference, lightning protection design
Product Dimensions 81x55x20 mm
Package Dimensions 298x226x60mm
Weight 0.41kg
Environmental Limits
Item Content
Operating Temperature -25 ºC ~+65ºC
Extended Operating Temperature -35 ºC~+75ºC
Storage Temperature -40ºC~+85ºC
Relative Humidity 95%(Non-condensing)