featuring a precise pick-up voltage range of 171-184V and a drop-out voltage of 55-90V

it addresses the common failure point of degraded BUNA N paddles and weakened spring return valve seals

The Maxitrol 325-3L-1/2-12A09 is a high-performance certified line pressure gas regulator engineered for 2 PSI piping systems

this unit handles primary voltages of 120V

though it can be down-rated to 3380W when used in 208V systems

System Sensor APA151 Annunciator featuring a precise pick-up voltageThe System Sensor APA151 is a critical remote annunciator with piezo alert designed for HVAC duct smoke detection systems. Engineered to meet NFPA 90A requirements, this accessory provides both audible and visual notification for 4 wire conventional duct smoke detectors when a system control panel is not present. Operating at 24 VDC (nominal range 16 to 33 VDC), the APA151 features a high visibility red alarm LED and a green power LED to ensure