Cellular M2M IoT RTU (8DIN,6AIN,4Relay, Modbus MQTT)

Product Description
The Cellular IoT M2M RTU S475/S475E is an industrial class, high reliability, high stability, and programmable Remote Terminal Unit (RTU).

The RTU features 8 digital inputs, 6CH 24 bit analog or PT100 Resistance Temperature Detector (RTD) inputs, 4 relay outputs, 1 temperature and humidity input, 1 Ethernet RJ45 port, and 2 RS485 serial port supports 320 IO tags via Modbus RTU protocol.  

The 4G RTU can be used as Modbus RTU Master and Slave at the same time and supports transparent data transmission. The Cellular IoT 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 network. 

The RTU supports BLIIoT IoT RTU protocol, Modbus RTU, Modbus TCP, MQTT protocol, which can communicate directly with the server, cloud platform or SCADA.

Key Features

• GSM/GPRS/3G/4G network communication, can be operated from anywhere, no distance limitation;
  
• Quad band 850/900/1800/1900Mhz GSM GPRS Module inside,3G/4GModules are optional;
  
• Modular design, can easily upgrade the cellular module if network upgrade;
  
• Embedded ARM® Cortex™-M4 32 Bit RISC Core, 168 MHz inside, RTOS system, reliable performance with in-built watchdog;
  
• Wide range power supply 9~36VDC with over voltage and phase-reversal protection;
  
• 8 digital inputs, compatible dry and wet contact, DIN0 can be used as high speed pulse counter max 1MHz,DIN1-3 can be used as low speed pulse counter max 1KHz.DIN1 can arm and disarm ;
  
• 6 analog inputs, 24bit resolution, compatibles 0/4~20mA, 0~5V, can change to PT100 Resistance Temperature Detectors;
  
• 4 relay output (5A/30VDC, 5A/250VAC), compatibles pulse outputs;
  
• 1 temperature & humidity sensor input for monitoring onsite environment, the sensor model is AM2301, Measures temperature from -40-80°C,0.5°C accuracy, Relative Humidity from 0-99RH%, accuracy is 3%;
  
• Inbuilt inter-lock logic programmer and powerful timer program function;
  
• Resend the data while communication failure and alert to users by SMS;
  
• Embedded TCP/IP protocol stack, support TCP/UDP, Modbus TCP, Modbus RTU over TCP , KingPigeon IoT RTU protocol and transparent transmission function, support self-defined handshake protocol active connecting server and automatically reconnect the server function after connection failure;
  
• Built-in TCP listening port, can be used as a TCP server, supports up to 5 terminal accesses;
  
• With dual SIM interface: SIM card 1 active, SIM 2 standby mode, improve communication quality;
  
• Supports RJ45 Ethernet port for connect internet;
  
• 2 RS485 port, supports Modbus RTU Master and Slave, can be used to extend I/O ports or meters;
  
• Supports SMS Alert when I/O triggered or recovery, and external power lost or recovery;
  
• Provides 1 channel 9~36VDC power source output for external device, saving wiring cost;
  
• Up to 10 SMS Alert and dial numbers, can program to receive specified alarm message,10 authorized numbers can switch on/off device with a free charge call at the specified time;
  
• Inbuilt 32G SD card to save up to 100000 historical data and events;
  
• Inbuilt large capacity automatically rechargeable backup battery;
  
• Using metal shell, protection class IP30. Metal shell and system security isolation, especially suitable for industrial applications in the field;
  
• L70 * W87 * H52mm, compatible wall installation and DIN35mm industrial rail installation.

Typical Application Scenarios

This device is designed for industrial automation and remote monitoring scenarios, including:

• Infrastructure Monitoring (BTS, pumping stations, tanks, buildings, river/flood control);
  
• Energy & Environmental Management (oil/gas pipelines, substations, weather stations, streetlight control);
  
• Security & Alarm Systems (surveillance, unmanned machine rooms, leakage detection, corrosion protection);
  
• Equipment & Machinery Control (valves, transformers, vending machines, boats/vehicles);
  
• Data Acquisition & Automation (temperature/humidity, liquid levels, wellheads, M2M communication).