Features No air consumption 100% solid state piezoresistive silicon pressure sensor High air flow capacity Field selectable 4-20 mA, 0-5 VDC or 0-10 VDC input Universal 24 VAC/VDC supply voltage Short circuit and reverse polarity protected inputs and outputs Auto/manual switch with separate increase/decrease push-buttons (EP-313) Precision pressure gauge for branch line indication Non-interactive zero and span trimmers Smallest size in the industry