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this adjustable pressure switch prevents unsafe operation by detecting flue blockages or inducer failure
2-way normally open solenoid valve designed for reliable flow control in high-demand HVACR and industrial fluid systems
the contact ratings are suitable for standard pilot duty applications across common control voltages
Precision Engineering: Optimized for 120V AC systems
Siemens Building Technology QFA32SS.EWNN Sensor 340793-762 this adjustable pressure switch preventsThe Siemens Building Technology QFA32SS. EWNN Sensor is a high precision field device designed for critical HVAC monitoring and Building Automation Systems (BAS). Built without a display (No HMI) and featuring a clean "No Logo" aesthetic, this room humidity and temperature sensor provides 2 percent accuracy for demanding environments like laboratories, data centers, and clean rooms. It supports field selectable 0 10Vdc, 0 5Vdc, and 4 20mA output
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