Wireless 4~20mA IoT103

Wireless 4~20mA IoT103

SGD 268

  • Rated Voltage: 7-24VDC;
  • Two working modes are available:

           1. Normal mode

           2. Low power consumption mode;

  • Coverting 4~20mA/0~5V analog signal;
  • Support Modbus RTU over TCP and MQTT;
  • Up to 10 SMS Alert and dial numbers, can program to receive specified alarm message.

The 4~20mA Wireless IoT Module is a wireless Internet of things gateway, designed for converting 4~20mA analog transducer signal to Wireless communcation over SMS/GPRS/3G/4G/NB-IoT Cellular Network, and connect to the IoT Cloud Platform.  The 4~20mA Wireless IoT Module suitable for pressure transducers, wind speed transducers, oil level transducers,liquid level transducers,etc. The 4~20mA Wireless IoT Module supports Modbus TCP Protocol and MQTT Protocol, compatiable KPIIOT cloud platform and other cloud platform or SCADA or OPC Server.



 Reference Scope

DC Power supply


Power consumption

 Low power consumption mode Standby:230uA;

 Normal mode:10mA~30mA,Max:230-360mA.




 Modbus RTU Over TCP, MQTT

SIM interface


Cellular Antenna

 SMA Antenna interface, 50 Ohm

Serial Interfaces

 Micro USB Port;

Digital output

 OC output,1A 30V DC

Digital Input

 NO or NC

Analog Inputs

 0-5V or 4-20mA

Temp.&Hum Inputs

 AM2301:Temperature range: -40°C to +80°C, Humidity Range: 0~100%RH

Temperature Input

 DS18B20:Temperature range: -55°C to +125°C,±3% RH

Temperature range

 -10-+60 °C

Humidity range

 Relative humidity 95% (condensation free)


1.     Can be used as a complete product or as a secondary development module;

2.     Two working modes are available:

       Normal mode: Real-time data transmission,Users can inquiry the real-time status;

       Low power consumption mode: Ultra low power consumption(230uA);

3.     Multiple communication methods:GSM,GPRS,3G,4G,NB-IoT,LoRa,Ethernet,etc;

4.     Coverting 4~20mA analog signal to cloud platform over cellular network;

5.     Support configure parameters and query real-time data via SMS,software,cloud platform;

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

7.     Support two different server centers,can set IP address or domain name ;

8.     Support Modbus RTU over TCP and MQTT protocol;

9.    Wide range power supply 7~24VDC with phase-reversal protection;

10.  Using Nano sim card,support PIN code function;

11.  Provide PCBA or waterproof enclosure,can be used outside.

Additional information


4G (E version)


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