Siemens Building Technology QFM3101 Sensor R-407C this automatic changeover control facilitates

this automatic changeover control facilitates the critical transition between heating and cooling circuits in combination hot and chilled water systems

Universal Application: Compatible with both R-22 and R-410A refrigerants when paired with the appropriate metering device

The Carrier HY84DA005 Terminal Board is a high-precision OEM HVAC replacement part engineered for reliable electrical termination in commercial and residential systems

Superior Contaminant Capture: The molded core architecture removes solid debris down to microscopic levels

featuring a 650 PSI open and 450 PSI close setpoint to prevent compressor damage during high-head pressure events

Siemens Building Technology QFM3101 Sensor R-407C this automatic changeover control facilitatesThe Siemens Building Technology QFM3101 is a high precision duct relative humidity sensor designed for demanding building automation and HVAC control applications. Featuring a robust 4 20mA output signal, this sensor provides a linear 0 100% RH measurement with a strict 2% accuracy rating. Engineered for professional grade reliability, it functions as a direct functional cross for the HD2XMSX, ensuring seamless integration into existing control loops