The Daikin-McQuay 1766334 Thermistor is a precision temperature-sensing component designed to monitor temperature within compatible HVAC equipment. It works by changing its electrical resistance in response to temperature variations, allowing the system control board to accurately determine operating conditions and adjust heating, cooling, or protection functions. Commonly used in Dai... https://www.partshnc.com/1766334-daikin-mcquay-thermistor