Product selling point: 1. Made of materials, , 2. Long service life 3. The screen can provide clear reading 4. Used to control and measure water and flow 5. Suitable for , gasoline, urea, chemical liquid, water, oil and other media Product parameters: Media: , , Chemicals, Gasoline Import/Export: 1inch Measurement accuracy: 1% Repeatability: 0.5% Maximum working pressure: 10BAR Working voltage: 2.3-3.3V Standby time: 2 years Flow range: 10-100L/min Single count: 0.00-9999.9 Total cumulative number: 0-999999 Cumulative number of classes: 0-999999 Units of measure: Liters/L, Gallons/GAL, Pints/, Quarts/ Single measurement reset: RESET Battery: battery (shipping with batteries) Key Description: MENU key: switch between flow rate and class accumulation display, measurement calibration, setting coefficient and unit; RESET key: clear the single count, class accumulated number, total accumulated number Instructions: 1. Clear the single count When there is no pulse input, press the "RESET" key, the LCD will display in full screen ( in the figure ), release the "RESET" key to return to the standby interface, and the single count has been cleared; style: B-portrait Material: nylon colour: blue Package Contents: 1 x Flow Meter 1 x English manual 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.