Features: Ensure your tankless water heater operates at efficiency with this flows Sensors, designs for precise water flows detection and simple compatibility. Crafted from high quality metal with a 24AWG/30V specification, this flows Sensors offers superior electrical and conductivity, guaranteeing accurate performances and durability. Suitable for homeowners and maintenance professional want to restores their models 18, 24, 27, or 36 to full functionality with a reliable, easy to install replacement part. Perfect for residential setting where continuous hot water is essential, this flows Sensors activates the heating mechanism as soon as water flows is detected, ensuring a steady supply of hot water. With its Precisions engineered circuit designs, this flows Sensors not only replaces your faulty component but enhances the responsiveness and stability of your tankless water heater. Specifications: Material: plastic Size: about 67mm/2.64inch Water pressure :≤1.75MPa Operating voltages ranges DC5~15V Insulation resistance >100MQ flows pulse characteristic (8.1xQ-3)±10%Q=L/ Output pulse high >DC4.7V(input voltages DC5V) Output pulse low :<DC0.5V(input voltages DC5V) Accuracy (±10% in 1~30L\ Output pulse duty cycle :50%±10% Package Includes: 1xWater flows Sensors note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.