This room thermostat has six relay outputs: three for the 3-speed fan, two for valve control, and one for a condensate pump or heater. It also has a voltage output for an EC fan.

The TRM room thermostat has a resistive input and a dual-mode input. You can connect an external NTC 50 temperature sensor to the resistive input, for example, to measure the return air temperature. The dual-mode input allows you to connect an external NTC 50 temperature sensor to the thermostat for heating/cooling switching in a 2-pipe system. You can also connect a presence sensor or a switch to the dual-mode input to turn the thermostat on and off.

The room thermostat has an easy-to-read backlit LCD display with a resolution of 0.1°C. Users can easily adjust the temperature setpoint using the buttons adjacent to the display. The thermostat also has a built-in timer for automatic shut-off.

Commissioning the room thermostat is simple. Depending on your application, you can select the basic configuration using DIP switches. Additional settings can be configured via the user interface or Modbus communication. This room thermostat can be flush-mounted on the wall or installed directly into an HVAC unit. The thermostat is compatible with 503 flush-mount boxes.