G1/2 1-30L/min DC5V Water Flow Sensor Flowmeter Hall Flow Sensor Water Control 1.75MPa Counter Switch For Arduino brand new and high quality Features: This is a small zise product that easy to install. Made of good material, the product is precise and durable, no power consumption. Suitable for gas water heater, electric water heater, washer, wall-hanging stove, electromagnetic water heater, intelligent IC water meter,cooling system, circulatory system, heating equipment,etc. Three lines: red is positive, black is negative, yellow is pulse signal. Specification: Test range: 1~30L/min(m3/h) Instantaneous flow pulse characteristics:F=[10Q]10, F means instantaneous pulse value(Hz),Q means instant flow Max. Working current: 15mA Insulativity: insulation resistance100M Ohm Electric strength: AC 500V, 50Hz Use voltage: for DC 5V Fit media: water Working pressure: 1.75MPa for Protection grade: high linearity: 0.01(%F.S.) Output signal: moder Hysteresis: 0.01(%F.S.) Material: mixtures Mechanical properties: magnetic material Dimensions: 37x58x37mm/1.46x2.28x1.46inch Connenctor outer diameter: G1/2" Color: Black Quantity: 1 Pc Package includes: 1 x Water Flow Sensor Flowmeter