This SPST pressure switch features an "open on low" configuration

Key Benefits Field-Adjustable Performance: Features a wide operating range of 0

the normally open (NO) contacts (terminals 1-3 and 4-6) close

though 3-way operation is the primary design intent

making it a versatile choice for direct-drive motor applications

Carrier HH79NZ023 Air Sensor 320735-701 This SPST pressure switch featuresThe Carrier HH79NZ023 Outdoor Air Sensor is a precision engineered OEM replacement part designed for accurate environmental monitoring in residential and commercial HVAC systems. Built to withstand rigorous external conditions, this sensor operates within a wide temperature range of 40F to 158F, ensuring consistent data transmission for system logic and economizer control. Its rugged housing provides superior protection against moisture and debris,