Features: The Water Flow Meter is a compact and easy to install meter. Its versatile designs allows for compatibility with various output modules, sensors, and remote transmitters. Designed for professionals and individuals alike, the Flow Meter is perfect for anyone who needs to accurately measure liquid flow rates. For use in various applications such as water heaters, water dispensers and more. Its compact size and easy installation make it suitable for a wide of applications. Main water flow sensor body, water flow rotor assembly and Hall sensor are installed in the water input end of the water heater, used to detect the water flow, when the water through the water flow rotor assembly, the magnetic rotor rotates and the speed changes with flow, Hall sensor output the corresponding pulse signal, feedback to controller, by controller to determine the size of the water flow. Specifications: Material: Nylon Connector: (DN10) Voltage: 3.5-24VDC Inner Diameter: 9.7mm Water Pressure Resistance: Less Equal to 0.8MPa High Level Output Pulse: Large Than DC4.5V(Input DC5V) Low Level Output Pulse: Lower Than DC0.5V(Input DC5V) Insulation Resistance: Large Than 100MΩ Flow Ranges: 0.5-10L/Min±3% Flow Characteristics: Hz=[21xQ]±3% (Q＝L/min) Size: Approx. 6x3.6x2.8cm/2.36x1.42x1.10in Package Includes: 1x Flow Meter note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.