Guangdong, China
Business Type:
Manufacturer/Factory & Trading Company
Number of Employees:
Year of Establishment:
Plant Area:
852 square meters
Average Lead Time:
Peak season lead time: within 15 workdays
Off season lead time: within 15 workdays
OEM/ODM Service
Sample Available

SMS Alarm Gateway Function, Remote Extend I/O Tags Control, Industrial Automation Data Transmission manufacturer / supplier in China, offering GSM 3G 4G Lte Industrial Automation Data Transmission System S374, Diesel Generator Power Single Thress Phase Power Electricity Remotely Monitoring System, Industrial Automation Controller Smart Switches for Automation Remote Motor Control RTU5024 and so on.

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GSM 3G 4G Lte Industrial Automation Data Transmission System S374

Get Latest Price
Purchase Qty. / Reference FOB Price
5-99 Sets US $138
100+ Sets US $134
Port: Shenzhen, China
Production Capacity: 88888/PCS/Year
Payment Terms: T/T, Western Union, Paypal
Usage: Server, Gateway
Type: Wireless
Support Network: Ethernet
Information content: Data
Certification: CE, RoHS, FCC
Condition: New

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Basic Info

Model NO.
S374 3G
GSM Frequency
TCP/IP Stack
SIM Interface
Supporting 3V and 1.8V SIM Card
Serial Interfaces
Serial Interfaces
1 RJ45 Ethernet Port for Connect Internet, Wan or
2 RS485
Backup Battery
3.7V 1200mAh
Exterior Dimension
Net Weight
Transport Package
HS Code
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 Alarm

GSM 3G 4G Remote Switch 

GSM 3G 4G Gate Opener  Intercom

GSM 3G 4G Remote Terminal Unit

GSM 3G 4G Modbus RTU 


GSM 3G 4G Power IoT RTU

433Mhz GSM 3G 4G Wireless RTU

Ethernet Remote I/O Module

Modbus RTU Remote I/O Module

GSM 3G 4G Security System

Web Server+Cloud Platform+APP


Quickly Guide List

GSM SMS GPRS 3G 4G RTU Controller Quick Selection Guide

Click Here

Modbus TCP Ethernet Remote I/O Module Quick Selection Guide

Click Here

Modbus RTU Remote I/O Module Quick Selection Guide

Click Here

GSM SMS 3G 4G Security Alarm Senior Care Quick Selection Guide

Click Here



GSM 3G 4G LTE industrial automation data transmission system S374
Product Description



Name: GSM 3G 4G LTE industrial automation data transmission system S374

The Cellular IoT Modbus Gateway is an industrial class, high reliability, high stability, and programmable Remote Terminal Unit.  It embedded 32-Bit High Performance Microprocessor MCU, inbuilt industrial Cellular module. It provides 1 ambient sensor input for monitoring onsite temperature and humidity, 1 Ethernet RJ45 port for connect internet WAN or LAN, and 2 RS485 serial port, supports 128 extend I/O tags via Modbus RTU protocol. It can monitoring and operates the RS485 ports and extend I/O tags by SMS, APP, Web Server, internet, timers and programmed inter-lock events automatically

GSM 3G 4G Lte Industrial Automation Data Transmission System S374 

The Cellular IoT Modbus Gateway inbuilt TCP/IP protocol stack 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 Ethernet or 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 designed 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 RS485 data transmission, remote extend I/O tags control, remote smart PLC, meters monitoring.

The Cellular IoT Modbus Gateway supports 2 RS485 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. 2 RS485 ports can be used one as Modbus RTU Master and the other as Slave at the same time.

GSM 3G 4G Lte Industrial Automation Data Transmission System S374

Typically applications:


1.      BTS Monitoring;

2.      Security Alarm System applications;          

3.      Supervision and monitoring alarm systems;

4.      Automatic monitoring system;             

5.      Vending Machines security protection;

6.      Pumping Stations, Tanks, Oil or Water levels;

7.      Buildings and Real Estate;

8.      Weather Stations; 

9.      River Monitoring and Flood Control;

10.   Oil and gas pipelines;  

11.   Corrosion protection

12.   Temperatures, water leakage applications;

13.   Wellheads, boat, vehicle;

14.   Energy saving, street lights control system;

15.   Valve controls;

16.   Transformer stations;   

17.   Unmanned machine rooms;

18.   Control room application;

19.   Automation System, M2M,etc.


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

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

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

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

11. Supports RJ45 Ethernet port for connect internet, WAN or LAN;

12. 2 RS485 port supports Modbus RTU Master and Slave,  can be used to extend I/O ports or meters;

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

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

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

16. Inbuilt 8G SD card to save up to 100000 historical data and events;

17. Inbuilt large capacity automatically rechargeable backup battery;

18.  Industrial class design suitable for long time work applications;

19. using metal shell, protection class IP30. Metal shell and system security isolation, especially suitable for industrial applications in the field;

20.  L70 * W88 * H30mm, compatible wall installation and DIN35mm industrial rail installation.

Technical Specification: 

GSM 3G 4G Lte Industrial Automation Data Transmission System S374


More information

Download User Manual, App, PC configurator please visit 

For Industrial IoT Solutions:                           For Home Security Alarms: 



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