Features: This water flow sensor is simple to install and features a durable impellers for long-lasting wear resistance. The German-imported hall element is surround in potting glues to prevent aging and ensure reliable perform, while the product compact size allows for all-rounded installation. Suitable for use in water dispensers, purifiers, and other household appliances, this water flow sensor proveid accurate measurement and pulse signal output. Whether monitoring liquid flow rate in a water heaters or coffee machine, or trackings water usage in a filter manager or direct drink machine, this sensor is perfect for wide ranges of applications. Produced from food-grade material and designed with quick-plug self-locking connection, this water flow sensor is a reliable and convenient choice for any fluid flow metering need Specifications: Material: plastic Inside diameter: approx 1.2mm/3.5mm(optional) Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xWater Flow Sensor