Supply Voltage: 9V alkaline battery

Battery Life: Up to 100 hours

Accuracy: ±0.5% FS, 60° to 78°F (15.6° to 25.6°C); ±1.5% FS from 32° to 60°F (0° to 15.6°C) and 78° to 104°F (25.6° to 40°C)

Pressure Range:

475-000-FM: 0-1.00" W.C. (0-0.249 kPa)/ 5 psig (35 kPa) maximum

475-0-FM-AV: 0-10.00" W.C. (0-2.49 kPa)/5 psig (35 kPa) maximum

475-00-FM-AV: 0-4.00" W.C. (0-0.995 kPa)/5 psig (35 kPa) maximum

475-0-FM: 0-10.00" W.C. (0-2.49 kPa)/5 psig (35 kPa) maximum

475-1-FM: 0-19.99" W.C. (0-4.97 kPa)/10 psig (69 kPa) maximum

Device Type: Service of Air and some combustible gases

Connection Type: Two barbed for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) ID tubing

Display: 0.5" liquid crystal, 3-1/2 digits

Air Velocity Kit: Air velocity kit includes the 475-FM Manometer, (2) A303 Static Pressure tips, (2) 9' lengths of 3/16" ID rubber tubing, (1) 166-6-CF Pitot Tube, (1) A-397 Step Drill bit, A532 Air Velocity slide chart, Instructions, and a molded plastic Carrying Case, Air velocity kit includes the 475-FM manometer, (2) static pressure tips, (2) 9' lengths of 3/16" ID rubber tubing, (1) 166-6-CF pitot tube, (1) A-397 step drill bit, air velocity slide chart, instructions, and a molded plastic carrying case

Operating Temperature: 32° to 104°F (0° to 40°C)

Dimensions: 6.6 x 2.8 x 0.9 (16.8 x 7.1 x 2.3 cm)

Weight: Unit: 0.3 lb (0.14 kg), Kit: 0.6 lb (0.27 kg)

Approvals: FM, CE

Warranty: 1 year