Friedrich 67812094 Indoor Air Inlet Temperature Sensor

The Friedrich 67812094 Indoor Air Inlet Temperature Sensor is an essential accessory to help control and measure the temperatures of the air inside HVAC systems. This temperature sensor uses a thermistor which is an electrical resistor that varies its resistive values with the change in temperature to measure such air temperatures as low as -40°C or as high as 125°C. Mounted at the entry of indoor air ducts or chambers, this sensor continually measures the temperature of the incoming air. It works on the fact that the resistance of the thermistor changes in a measurable way with temperature change, thus constantly supplying temperature information to the control unit of the HVAC system.