This Allied Air Enterprises 78M19 C0SNSR20AE1 is a supply static differential pressure transducer designed for HVAC systems. It accurately monitors supply air quality and ventilation, contributing to indoor air quality (IAQ) management. The multi-range device offers adjustable operating pressure ranges of 0-5.0 in. w.c., 0-2.5 in. w.c., and 0-1.25 in. w.c., with a factory setting of 0-5.0 in. w.c.. It provides flexible output options including 0-10VDC (default), 0-5VDC, or 4-20mA, powered by a 24VAC supply. Featuring an accuracy of ±1% F.S. and 10 PSID overpressure protection, it is compatible with clean dry air or inert gases. The unit features an un-pluggable screw terminal block, a Steel NEMA 4 enclosure, and an aluminum probe. It is NIST traceable calibrated and compatible with Prodigy® Unit Controller and Network Thermostat Controller Bypass Controlle