Siemens Building Technology QFA3160 Sensor 318518-761 it provides the essential phase

it provides the essential phase shift and current regulation required to optimize terminal torque and motor efficiency in fan coil units and blower assemblies

Attempting to install it in a system designed for a multi-speed or ECM inducer will cause control board errors and safety switch failures

Zero Minimum Differential: Internal pilot-operation allows for reliable cycling even in low-pressure systems

Contractor-Ready Kit: Includes necessary mounting hardware and an adjustment tool for immediate field calibration

Optimal Refrigerant Flow: Engineered to minimize pressure drop across the heat pump reversing valve

Siemens Building Technology QFA3160 Sensor 318518-761 it provides the essential phaseThe Siemens QFA3160 is a high precision room humidity and temperature sensor engineered for critical HVAC applications requiring rapid response times and long term stability. This wall mount RH sensor utilizes a capacitive sensing element to provide a 2% accuracy rating across a full 0 100% relative humidity range. Designed for seamless integration with building automation systems, it features simultaneous 0 10Vdc output signals for both humidity and