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King Pigeon Hi-Tech Co., Ltd.
King Pigeon Hi-Tech Co., Ltd.
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S278 Cellular IoT Modbus Gateway(4DIN,2Relay,1TH,USB,RJ45,RS485,320 Mapping

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

Brand Name : King Pigeon
Model Number : S278
Certification : CE,CFF
Place of Origin : Shenzhen
MOQ : 500pieces
Price : USD,108,piece
Payment Terms : T/T,, Western Union,paypal
Supply Ability : 10000,pieces,per20
Delivery Time : 20days
Packaging Details : RTU X1 AC/DC AdaptorX1 GSM/3G/4G Antenna X1 User Manual X1 PC ConfiguratorX1
Analog Inputs : 6
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About Us

King Pigeon Hi-Tech.Co.,Ltd. is a leading GSM GPRS 3G 4G RTU Controller and GSM GPRS 3G 4G Industrial IoT Solution manufacturer since 2005. It provides a complete product lines and Cloud Platform, APP solution to meet different applications.

***Mianly Products***

GSM 3G 4G SMS Controller AlarmGSM 3G 4G Remote SwitchGSM 3G 4G Gate Opener Intercom
GSM 3G 4G Remote Terminal UnitGSM 3G 4G Modbus RTUGSM 3G 4G SMS Modem DTU
GSM 3G 4G Power IoT RTU433Mhz GSM 3G 4G Wireless RTUEthernet Remote I/O Module
Modbus RTU Remote I/O ModuleGSM 3G 4G Security SystemWeb Server+Cloud Platform+APP

Quickly Guide List

GSM SMS GPRS 3G 4G RTU Controller Quick Selection GuideClick Here
Modbus TCP Ethernet Remote I/O Module Quick Selection GuideClick Here
Modbus RTU Remote I/O Module Quick Selection GuideClick Here
GSM SMS 3G 4G Security Alarm Senior Care Quick Selection GuideClick Here

Brief Introduction


Name: Cellular IoT Modbus Gateway

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 inputs, 2 relay outputs, 1 ambient sensor input 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.

Model List

S275 ports

.The Cellular IoT Modbus Gateway supports transparent data transmission and performs as Modbus Slave over GPRS/3G/4G/NB-IoT network and RS485 serial port. Moreover, the Cellular IoT Modbus RTU can be used as Modbus RTU Master to reading smart meters, I/O modules, PLC, and converts to SMS alert once triggered the threshold value, or transmit data to remote server over GPRS/3G/4G/NB-IOT network.

S27x solution

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.

Distribution Monitor Solution_1 760

Typically applications:

Item Photos


Main 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. 4 digital inputs, compatibles dry and wet contact, one of it can be used as pulse counter;

8. 2 relay output (5A/30VDC, 5A/250VAC), compatibles pulse outputs;

9. 1 ambient sensor input for monitoring onsite temperature and humidity;

10. Inbuilt inter-lock logic programmer and powerful timer program function;

11. Resend the data while communication failure and alert to users by SMS;

12. Inbuilt TCP/IP protocol stack, supports cloud, APP and web server applications.

13. Supports Modbus TCP protocol, can integrate to SCADA,HMI,DSC directly.

14. Integrated 1 Industrial 10/100M adaptive Ethernet module inside, supports Modbus TCP;

15. 1 RS485 port supports Modbus RTU Master, supports max. 320 mapping registers, can be used to extend I/O ports or meters;

16. Supports SMS Alert when I/O triggered or recovery, and external power lost or recovery;

17. Provides 1 channel 9~36VDC power source output for external device, saving wiring cost;

18. Up to 10 SMS Alert and dial numbers, can program to receive specified alarm message.

19. Inbuilt 4M internal memory to save 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. L105 * W88 * H30mm, compatible wall installation and DIN35mm industrial rail installation.


More Information

Download User Manual, App, PC configurator please visit

For Industrial IoT Solutions: For Home Security Alarms:


GPRS-M2M.jpg GsmAlarmSystem.jpg

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