Features: Food grade PC material, health and environmental protect. The electronic component used in the flowmeter have high measurement accuracy and strong stability. Compact and practical, convenient to install. Hall effect component are of imported materials from Germany, and are packaged with pottingglue to prevent water, and have a long service life. Visual and transparentdesign, convenient to observe flow changes. Specifications: Flow Range: 0.2-12L/Min3% Voltage: DC3.5-24V MaxWorking Current: 15mA(DC5V) Insulation Resistance: Large Than 100M Humidity Range: 35%-90%(NotFrost) Temperature Rnage: 0-80 FlowPulseCharacteristic: (8.3xQ)2% Size: Approx. 75.01x21.5mm/29.53x8.46in Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Flow Meter