Cellular M2M IoT RTU (4DIN, 4Relay, 1TH, USB, RS485)

Description

The remote terminal unit S274 features 4 digital inputs, 4 relay outputs, 1 temperature and humidity input, and 1 RS485 serial port. The remote terminal unit supports Modbus RTU over TCP, Modbus TCP, MQTT protocol. 

The remote monitoring module is designed for remote measurement and control system and remote data acquisition telemetry systems, such as smoke, liquid, water, flow, flood, electricity, power, energy remote monitoring and remote control. 

Key Features

• 4G network communication, can be operated from anywhere, no distance limitation;
  
• Wide range power supply 12~36VDC with over voltage and phase-reversal protection;
  
• Embedded ARM Cortex-M4 32 Bit RISC CoreRTOS system, reliable performance with in-built watchdog;
  
• 4digital inputs, supports both dry contact and wet contact. Logic level: 10~30V or short circuit treated as close, 0~3V or open circuits treated as open. DIN0 as a high-speed pulse counter, sampling frequency: 1MHz; DIN1~3 as low-speed pulse counter, DIN1 with arm and disarm function;
  
• 4 relay output (5A@30VDC, 5A@250VAC), can auto control by timer, alarm-link and remote control by SMS, cloud. The first DO can set time to control by authorize number;
  
• 1 temperature & humidity sensor input for monitoring onsite environment, temperatures range from -40°C to 80°C, with a 0.5°C accuracy, humidity range from 0 to 100RH%, with a 3% accuracy;
  
• 4analog inputs, 12bits resolution, supports 0-5V, 0-20mA, 4-20mA output transducers;
  
• Inbuilt 2M EEPROM to save up to 200 historical data and events;
  
• Powerful SMS function
  
• Inbuilt 1DC output for external transducers to save wiring cost;
  
• Automatically resend the data while communication interrupt or failure, and failure will alert by SMS;
  
• Supports remote restartby SMS commands;
  
• 10 SMS Alert and auto dial numbers for receiving alarm message, can program to receive specified alarm message. The authorized numbers also can dial to open the door or turn on/off machine at the specified time;
  
• Inbuilt inter-lock logic programmer and powerful timer program function;
  
• Support SMS, dial, 4G network for alert, USB port for configuration and upgrade firmware;
  
• Embedded TCP/IP protocol stack, support TCP/UDP, MQTT, Modbus TCP,
• Modbus RTU over TCP, BLIIoT IoT RTU protocol;
  
• Metal case with IP30 protection grade, safely isolated from inner system, especially suitable for industrial control application.
  
• Small size: 108mmx82mmx40mm, support wall-mounting and DIN Rail mounting.

Typical Application Scenarios

Industrial Monitoring & Automation 

• Automatic monitoring systems  
  
• Pumping station monitoring  
  
• Tank level monitoring (oil/water)  
  
• Oil & gas pipeline monitoring  
  
• Corrosion protection  
  
• Valve control  
  
• Transformer station monitoring  
  
• Unmanned equipment rooms  
  
• Control room applications  
  
• Automation systems  
  
• M2M (Machine-to-Machine) communication

Security & Alarm Systems

• BTS (Base Station) monitoring  
  
• Security alarm systems  
  
• Surveillance & alarm monitoring  
  
• Vending machine security  
  
• Access control systems  

Environmental & Disaster Monitoring

• Weather stations  
  
• River monitoring & flood control  
  
• Water leakage detection  

Energy Management & Efficiency  

• Energy-saving systems  
  
• Smart streetlight control  

Building & Real Estate 

• Building & property monitoring  

Other Applications

• Wellhead monitoring  
  
• Boat/vehicle tracking