Siemens Building Technology QAC2030U Temperature Sensor 321042-401 Environmental Protection: The TEAO enclosure

Environmental Protection: The TEAO enclosure is purpose-built to withstand the rigors of outdoor condenser environments

the 100217965 (formerly part number 100161476) maintains the factory-calibrated setpoint essential for commercial water heater repair and equipment longevity

Broad Compatibility: Supports a wide range of Carrier

we recommend verifying the frequency range to ensure accurate current detection

If the input/output voltages and VA ratings match

Siemens Building Technology QAC2030U Temperature Sensor 321042-401 Environmental Protection: The TEAO enclosureThe Siemens Building Technology QAC2030U is a commercial grade outdoor air temperature sensor engineered for precise ambient monitoring in professional HVAC and building automation systems. Built around a high accuracy 10k ohm Type 2 NTC thermistor, this sensor provides the stable resistance based signal required for sophisticated economizer control and outdoor air reset strategies. Its metal housing and robust construction allow for reliable