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King Pigeon Solution Company

China Manufacturer with main products: IOT Gateway, Openvpn Router, Modbus Mqtt IO Modules, Lora Gateway, Gateway Opener, RTU Gateway

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S257 Cellular Electricity Power Monitoring IoT RTU M2M

FOB Price: 100.00 - 200.00 USD/Piece
Supply Ability: 5,000 Piece(s) per Month
Shipping: Express
Payment Terms: T/T
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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Guangdong in China

Quick Details

  • Contact Load: High Power
  • Protect Feature: Sealed
  • Size: Miniature
  • Theory: Electromagnetic Relay
  • Brand Name: King Pigeon
  • Usage: Auto
  • Model Number: S257
  • Power supply: 60~500VAC/80~700VDC
  • Ethernet: 1
  • RS485: 1
  • Measure Range: AC100~400V, 1A(5)A, other current should use CT.
  • Digital Inputs: 2
  • Relay Outputs: 2


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, LCD Display is 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 anti-jamming and in-built watchdog;

6.     High isolate voltage, current and voltage input signal isolated by accuracy transformer, afford arrive DC2500V;

7.  Working Voltage: 60~500VAC or 70~800VDC;

8.  3-phase 3 wires or 4 wires power parameter measurement, include voltage, current, factor, watts, frequency, apparent power, active power, reactive power, active energy, reactive energy, phase loss;

9.  Measurement range: AC100~400VAC, currant range: 5A, other range should use CT;

10.  2 digital inputs, compatibles dry and wet contact, 2 relay output (5A/30VDC, 5A/250VAC), compatibles pulse outputs;

11. 1 ambient sensor input for monitoring onsite temperature and humidity;

12. 1 RS485 port, supports Modbus RTU Master and Slave, can be used to extend I/O ports or meters;

13. Provides 1 channel DC power source output for external device, saving wiring cost;

14. Each parameter can setup threshold, when exceed or recovery will alarm immediately;

15. Can monitoring phase loss, when occurs will alarm immediately.

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

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

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

19. Supports Modbus TCP, Modbus RTU protocol and transparent transmission, can be used as master and slaves, can integrate to SCADA, HMI, DSC directly;

20. Supports USB setting, reading, records inquiry and firmware upgrade;

21. Supports 100000 historical records for checking;

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

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

24.  up to 10 SMS Alert and dial numbers, can program to receive specified alarm message;

25. Inbuilt large capacity automatically rechargeable backup battery;

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

27. Using metal shell, protection class IP67. Metal shell and system security isolation, especially suitable for industrial applications in the field;

S257 Cellular Electricity Power Monitoring IoT RTU M2M

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