1Pc New Full Cooper G3/4" DN20mm Thread Hall Effect Liquid Water Flow Sensor Switch 2-45L/Min Description: Our water flow sensor is made of high-quality copper material, very sturdy and durable e, 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 e. 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 e. 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 e. 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: Material: Copper Color: Shown as picture Type: G3/4"(External Thread Diameter) Water Quality Requirement: ≤60℃ Start Flow Range: 1.5L/min Flow Range: 2-45L/min Maximum Water Pressure: 1.75MPa Max Current: 10mA Insulation resistance:＞100MΩ Electrical Strength: AC500V, 50Hz Copper Switch Length: Approx. 45mm / 1.8inch Wire Length: Approx. 35cm / 13.8inch Weight: Approx. 110g Package Included: 1 x Water Flow Switch