Product selling point: 1. Made of high-quality materials, durable, 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 (as shown 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.