Description:Our water flow sensor is made of high-quality copper material, very sturdy and durable to use, it is a kind of G3/4" type water flow sensor, its maximum water pressure is 1.75MPa and the range of flow is from 2L/min to 45L/min. Lightweight and has compact size, stable performance, low water pressure start, very easy to install and safe to use. And it can be perfectly used for water heaters, water dispenser, water purifier, water vending machine, coffee maker, flow measurement device, water control machine and so on. Features:Made of high-quality copper material, environmental-friendly, really sturdy and durable to use.G3/4" type water flow sensor, its maximum water pressure is 1.75MPa, the range of flow is from 2L/min to 45L/min. Three wire connection: Red for positive pole, black for negative pole, yellow for pulse signal.There is an integrated hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.Lightweight, reasonable size, stable performance, low water pressure start, easy to install, safe to use.Can be perfectly used for water heaters, water dispenser, water purifier, water vending machine, coffee maker, flow measurement device, water control machine and so on. Specifications:Condition: 100% Brand NewMaterial: Copper Color: Shown as pictureType: G3/4"(External Thread Diameter)Water Quality Requirement: 60Start Flow Range: 1.5L/minFlow Range: 2-45L/minMaximum Water Pressure: 1.75MPaMax Current: 10mAInsulation resistance:100MElectrical Strength: AC500V, 50HzCopper Switch Length: Approx. 45mm / 1.8inchWire Length: Approx. 35cm / 13.8inchWeight: Approx. 110gPackage Included:1 x Water Flow Switch