Shenzhen SI Hi-tech. Co.,Ltd.


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S278 Cellular IoT Modbus Gateway(4DIN, 2Relay, 1TH, USB, RJ45, RS485, 320 Mapping Registers)



56 ~ 60 / Piece Get Latest Price


56 per Piece

500 Piece

Gateway X1 AC/DC AdaptorX1 GSM/3G/4G Antenna X1 User Manual X1 PC ConfiguratorX1


10000 Piece per Week

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Product Specification

Internal 4M memory


Product Description


Name:S278 Cellular IoT Modbus Gateway(4DIN,2Relay,1TH,USB,RJ45,RS485,320 Mapping Registers)

The Cellular IoT Modbus Gateway is an industrial class, high reliability, high stability, and programmable Remote Terminal Unit (RTU).  It embedded 32-Bit High Performance Microprocessor MCU, integrated 1 Industrial 10/100M adaptive Ethernet module inside and inbuilt industrial Cellular module. It provides 4 digital s, 2 relay outputs, 1 ambient sensor for monitoring onsite temperature and humidity, and RS485 serial port, performs as Modbus RTU Master Supports extend maximum 320 mapping registers. It can monitoring and operates the I/O ports by SMS, APP, Web Server, internet, timers and programmed inter-lock events automatically.

The Cellular IoT Modbus Gateway inbuilt TCP/IP protocol stack over cellular network or Ethernet to make it suitable for internet of things (IoT) applications, it can be easily to operate by the provided cloud, app, and web server, or integrated to you IoT applications according to the TCP/UDP protocol, or integrated to SCADA systems by standard Modbus TCP protocol, too. This is very useful if you need remote control onsite devices with low cost solution.

The Cellular IoT Modbus Gateway is design for working in the harsh industrial application environment, widely used in a variety of industrial automation, security monitoring system, automatically measurement and control system, BTS monitoring, remote data acquisition, telemetrically systems, automatically control system. It can be used as a remote switch, remote I/O, remote smart PLC, timer switches.
Mainly Features:
1.   Can be operated from anywhere, no distance limitation;
2.   Quad band 850/900/1800/1900Mhz GSM GPRS Module inside.
3.   3G/4G/NB-IoT Modules are optional;
4.   Modular design, can easily upgrade the cellular module if network upgrade;
5.   Embedded ARM® Cortex™-M4 32 Bit RISC Core, 168 MHz inside, RTOS system, reliable performance with in-built watchdog;
6.   Wide range power supply 9~36VDC with over voltage and phase-reversal protection;
7.   8 digital s, compatibles dry and wet contact, one of it can be used as pulse counter;
8.   6 analog s, 12bit resolution, compatibles 0/4~20mA, 0~5V, can change to PT100 Resistance Temperature Detectors;
9.   4 relay output (5A/30VDC, 5A/250VAC), compatibles pulse outputs;
10. 1 ambient sensor for monitoring onsite temperature and humidity;
11. Inbuilt inter-lock logic programmer and powerful timer program function;
12. Resend the data while communication failure and alert to users by SMS;
13. Inbuilt TCP/IP protocol stack, supports cloud, APP and web server applications.
14. Supports transparent data transmission and Modbus protocol over RS485 and GPRS/3G/4G/NB-Iot networks, performs as Modbus Slave;
15. Supports SMS Alert when I/O triggered or recovery, and external power lost or recovery;
16. Provides 1 channel 9~36VDC power source output for external device, saving wiring cost;
17. Up to 10 SMS Alert and dial numbers, can program to receive specified alarm message.
18.10 authorized numbers can switch on/off device with a free charge call at the specified time;
19. Inbuilt 4G SD card to save up to 100000 historical data and events;
20. Inbuilt large capacity automatically rechargeable backup battery;
21.  Industrial class design suitable for long time work applications;
22. using metal shell, protection class IP30. Metal shell and system security isolation, especially suitable for industrial applications in the field;
23.  L175 * W88 * H30mm, compatible wall installation and DIN35mm industrial rail installation.

Ali Trade Manager:cn220076270
QQ: 1270575154







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Contact Information

Mr. Ma

Shenzhen SI Hi-tech. Co.,Ltd.

Guangshen, Shenzhen, guangdong, China


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