Small size, high quality, high precision Made of copper, strong and durable Easy to install, easy to use, can be used as a flow switch Durable structure, long-lasting performance Widely used in the water industry, such as constant temperature , 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, and stable performance. Interface size: 4 points (G1/2) Working voltage range: DC5-18V Water pressure resistance: less than equal 1.75MPa Output pulse high level: DC4.7V (input voltage DC5V) Output pulse duty cycle: 50%10% Insulation resistance: 100MQ Tightness: Close each hole, add 1.7Mpa water pressure test for 1 minute without leakage or deformation Inner diameter/outer diameter: inner diameter 15.4 water outlet 13.5mm/ outer diameter 20.5mm Thread length: 9.3mm size:44x30mm Material:copper colour:Gold Package Contents: 1 * water flow sensor Only the above package content, other products are not included. Note: Light 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. 1 Piece Of Yf-B1 Turbine Water Flow Sensor G1 / 2'' Electromagnetic Brass In-Line Hall Switch Male Thread 1-25l/Min Please well check the pictures and specifications to confirm the compatibility before purchase. Please contact us first if finding any problem with the products. We will do our best to provide satisfactory customer service. Light 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.