Differential Pressure Gauge, Scale Type Pressure, Pressure Range Minor Div. 0.01 In. WC, Rated Total Pressure 20 In. Hg to 25 psig, Relay Type 2 DPDT, Rated 10 A@28 VDC, 10 A @120/240 VAC, Full Scale Accuracy ( Percent) +/-3, Connection Size NPT (In.) 1/8, Power Requirement 110 VAC @ 50/60 Hz, Dial Size (In.) 4-1/2, Ambient Operating Range (F) 20 Degrees to 120 Degrees , Agency Compliance CE/UL/CSA, Includes Instructions, Manufacturers Warranty Length 1 Year