Air pressure is lead via a hose or pipe to a diaphragm contact. This contact converts the positive or negative pressure into an electrical contact and pulse.
Applications: commercial sectional doors rolling doors and mass transit
Works on doors up to 60ft
Can be used with standard pneumatic hose and Miller Edge extrusion
This modification provides a TEFC motor N4/12 watertight/oiltight control enclosure waterproof drive and limit chain NEMA4 thru-beam eyes and a watertight/oiltight three-button station.