Siemens Building Technology QFM3171 Sensor 320788-703 Bi-Flow Capability: Engineered for versatility

Bi-Flow Capability: Engineered for versatility in both cooling-only and heat pump cycles when paired with appropriate system configurations

provided the system uses the standard POE oil already present in the compressor

It pulls approximately 0

Enhanced Equipment Protection: Integrated anti-short cycle compressor delay prevents rapid cycling

ensuring a low-resistance path that reduces heat buildup at the contact points

Siemens Building Technology QFM3171 Sensor 320788-703 Bi-Flow Capability: Engineered for versatilityThe Siemens QFM3171 is a high precision duct relative humidity and temperature sensor designed for demanding HVAC applications where signal stability is paramount. Engineered for seamless integration into building automation systems (BAS), this unit provides dual 4 20mA output signals for both humidity and temperature, ensuring reliable data transmission even over long cable runs. For technicians performing retrofits, the QFM3171 serves as the direct