This indicates that the electrical contacts are normally closed and will move to the open position when the sensed pressure rises to the 1

This Danfoss replacement solenoid coil utilizes a terminal box connection (IP67 rated) to ensure high moisture resistance and protection against temperature fluctuations

this is a mechanical barometric damper

Built to meet NFPA 90A and UL 1820 standards

Dual Barb Connectors: Simplifies installation with standard 1/4" ID silicone or rubber pressure tubing

Setra 26410R5WD11T1C Pressure Transducer Els PW 17895 This indicates that the electricalThe Setra 26410R5WD11T1C is a field proven low differential pressure transducer designed for the rigorous demands of HVAC building automation and critical environment monitoring. This unidirectional pressure sensor features a 0 to 0. 5" WC range, providing the 1% FS accuracy required for precise VAV box control, static pressure measurement, and room pressurization. Engineered with a dead ended stainless steel welded capacitive sensing element, it