Flow controllers -Water flow sensor flow meter room flow Highlights brand generic Water flow sensor flow meter room flow Water flow sensor is mainly made up of plastic valve body, rotor assembly and current Hall Sensor. in the extremity & oacute; hot water inlet to detect a flow of water. When the water & #39; Through the flow rotor assembly, the magnetic rotor rotates and the speed will change the flow rate change. Hall signal output current sensor and feedback to the corresponding pulse controller, then the controller will control the flow. & nbsp; Can use water heaters, machines & agrave; credit cards, water vending machine, flow meter. & nbsp; Features: & nbsp; light weights, small size, easy to carry. install. Inlay & oacute; of stainless steel wheel shaft, durable portable. Ring of & eacute; waterproof & eacute; it & oacute; with the upper and lower strength structure never leaks. Precautions: Non-violent shock, and the & chemical erosion. No throwing or hitting. Mont & oacute; & agrave; the vertical, must not exceed 5 degrees inclination. Fluid temperature should not exceed 120 Cord connection: & nbsp; Red: positive (+) Yellow: Signal output. Black: Negative (-) Specifications: & nbsp; The lowest rated working voltage: DC4.5 5V-24V. Maximum working current: 15mA (DC 5V). Voltage working range: DC 5 ~ 18 v Capacitance & oacute; charging: & the; 10mA (DC 5V). The working temperature: & le; 80 Working Humidity: 35%~90% RH (no freezing) Allowing pressure: 1.75Mpa pressure Storage temperature: -25~+80° c Save Humidity: 25%~95% RH Flow Range: 1-30L/min External Thread: 1/2"" Package Include: & nbsp; 1 x Water Flow Sensor