Features: To prevent particles and debris from entering the sensors, a filter screen must be installed at the inlets of the sensors. The installation of water Flows sensors should be inside the equipment or indoors, and should not be exposed to harsh environments such as outdoor or humid high temperatures for a long time. The installation of water Flows sensors should avoid vibration and shaking environments and applications to avoid affecting the measurement accuracy of the sensors; When magnetic materials or materials that generate magnetic force on the sensors approach the sensors, their characteristics may change; Do not disassemble the water Flows sensors without authorization to prevent damage. Mainly used for water Flows control of electric appliances such as water heaters, humidifiers, drinking fountains. Specifications: Material:Brass Type:3/4'' Working voltage ranges DC3.5V-24V Inner diameter/outer diameter 17.9mm/25.8mm Screw tooth length 11mm Water pressure resistance ≤ 1.75MPa Output pulse high-level>DC4.7V (input voltage DC5V) Output pulse duty cycle 50% ± 10% Insulation resistance>100MΩ The Flows ranges is within 1 to 30minutes, with a sealing seal of ± 3% for each hole, Add 1.7Mpa water pressure test for 1 minutes without any leakage or deformation phenomenon Package Includes: 1x Water Flows Sensors note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.