It is high accuracy, , small volume turbine flow meter, and design with output module. The display are, 2 accumulations, resetting and accumulating and optional unit conversion of Gallon and Liter. It is easy to change the spare parts inside, and easy to maintain. It is easy to assemble as its compact design. Lithium battery, can supply 9000hours power. Connect Type: NPT ANS Flow Range: 1/2inch 1-10GPM (3.6-37.9LPM) 3/4inch 2-20GPM (7.6-75.7LPM) 1inch 5-50GPM (18.9-190LPM) 11/2inch 10-100GPM (38.0-380LPM 2inch 20-200GPM (76-760LPM) Accuracy: 1/2inch ±1.5% 3/4inch ±1.0% 1inch ±1.0% 11/2inch ±0.5% 2inch ±0.5% Note: The meter can be used under 2 situations: Working environment requires an oil pump or water pump above 0.1mA pressure; Working environment needs the flow above 10 liters per minute. note:It can't be used to measure the small flow and water, but only measure oil,gasoline. Colour:As Shown Material:Metal Package Contents: 1 x Turbine Digital Flow Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.