Air Velocity Kit Telescoping, Type Digital, Pressure Range 0 to 4000 In WC, Operating Range 0 to 4 In WC, Max. Pressure 5 psig, Accuracy +/- 0.5 PercentFS, Display 4 Digit LCD, Resolution 0.001 In. WC, Operating Temp. Range 0 Degrees to 140 Degrees F, Storage Temp. Range 0 Degrees to 140 Degrees F, Standards and Approvals CE, FM, Data Storage Yes, Alarm No, Connection Type (2) Barbed, Battery Type 9V, Includes Wrist Strap, Battery, Manufacturers Warranty Length 1 yr.