Description: This water sensor is mainly composed of plastic valve body, water rotor component and hall sensor. The impeller is embedded with a stainless steel shaft which is wear-resistant. Sealing adopts upper and lower mechanical structure and never leak. Hall elements were imported from and sealed with the pouring sealant to prevent water inlet. Never aging. All materials conform to the ROHS test standard. It is installed in the water heater to detect the inflow of water. When water passes through the rotor component, the rotor rotates and the rotational changes as the changes.Hall sensor outputs corresponding pulses signal, feedback to controller. Controller control the water . Fitment: water heater, water vending machine, water dispenser, water fountain, measurement device, etc. Specification: Maximum working current: 15 mA (DC5V) Working voltage range: DC5~18 v Load capacity: 10 mA (DC5V) Wokring temperature: 80 Working hum