2-channel thermocouple module with Modbus RTU interface TST320

TST320 is a 2-channel thermocouple module with Modbus RTU interface.


TST320 is a module with MODBUS RTU interface and 2 inputs for thermocouples. Crafted for a range of industrial applications, it provides precise temperature readings across a variety of thermocouple types, making it an ideal solution for temperature measurements in industrial processes.

The module’s unparalleled compatibility supports all thermocouples – J, K, T, N, E, B, R, and S – ensuring seamless integration into any setup. Its 24-bit ADC with DSP processing and ±0.1% accuracy provide exceptional measurement precision. Combined with ±0.19% CJC accuracy, your readings remain reliably precise.

With an RS-485 interface supporting up to 63 nodes, communication with existing systems is effortless using Modbus RTU protocol.

Designed for easy installation, it includes an integrated 120-ohm termination resistor for optimized signal integrity, simplifying setup.

Safety is a top priority with a remarkable working isolation voltage of 1500Vrms, ensuring secure operation in industrial environments.

TST320 2-channel thermocouple module enables engineers, technicians, and decision-makers to obtain real-time temperature data, enhancing process efficiency, product quality, and system reliability.


  • 24-bit ADC with DSP processing;
  • RS-485 interface supporting up to 63 nodes;
  • LED indicator displaying communication status;
  • Compatibility with all types of thermocouples;
  • Integrated 120-ohm termination resistor;
  • Firmware update capability via the interface.

2-channel thermocouple module applications

  • Industrial temperature monitoring;
  • HVAC system control;
  • Laboratory and research applications;
  • Food and beverage industry;
  • Building management systems;
  • Automotive industry.

TST320 can be used with

  • Energy monitoring module TCW260
  • Industrial IoT module TCW242
  • Third party MODBUS RTU master devices


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