Manufacturer Name: Siemens Building Technology Product Number: QAA2280.EWSC OEM Part Number: QAA2280.EWSC Product Description: 55-95F Temp Sensor Analog Res Weight:0.33lbs/149.69g Siemens QAA2280.EWSC is an analog resistive room temperature sensor that can measure interior temperatures from 55°F to 95°F with high precision. This model is compatible with a huge number of HVAC sy... https://www.partshnc.com/qaa2280ewsc-siemens-building-technology-55-95f-temp-sensor-analog-res