Siemens Building Technology QFA3212.EWSN Sensor 320074-702 OEM Compatibility: Specifically designed for

OEM Compatibility: Specifically designed for Trane and American Standard 4-ton systems

Its surface-mount housing and durable construction make it a standard choice for furnace safety limit maintenance and HVAC rollout switch replacement tasks

The Trane CNT1760 Defrost Control is a critical OEM replacement part designed for commercial refrigeration and Trane heat pump systems

Technicians should verify the compressor's footprint

managing 2-stage heating and cooling sequences

Siemens Building Technology QFA3212.EWSN Sensor 320074-702 OEM Compatibility: Specifically designed forThe Siemens QFA3212. EWSN is a high precision room humidity and temperature sensor designed for demanding commercial HVAC and building automation systems. Built for seamless integration with Siemens Terminal Equipment Controllers (TECs) and APOGEE systems, this unit provides critical environmental feedback to ensure optimal indoor air quality. It serves as a direct professional upgrade and replacement for the QFA3212. EWNN, maintaining the same