Small size, high quality, high precisionMade of copper, strong and durableEasy to install, easy to use, can be used as a flow switchDurable structure, long-lasting performanceWidely used in the water industry, such as constant temperature water heaters, water purifiers, drinking fountains, etc.The sealing ring adopts a mechanical structure that is loaded up and down and does not leak;The sensor uses high-quality Hall-effect elements and is encapsulated with glue to prevent water from entering.It is an excellent sensor with high precision, long life and stable performance.Interface size: 4 points (G1/2)Working voltage range: DC5-18VWater pressure resistance: less than equal 1.75MPaOutput pulse high level: Greater than DC4.7V (input voltage DC5V)Output pulse duty cycle: 50%±10%Insulation resistance: Greater than 100MQTightness: Close each hole, add 1.7Mpa water pressure test for 1 minute without leakage or deformationInner diameter/outer diameter: inner diameter 15.4 water outlet 13.5mm/ outer diameter 20.5mmThread length: 9.3mmsize:44x30mmMaterial:coppercolour:GoldPackage Contents:1 * water flow sensorOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.