Features: 1-30L/Min 1.75MPa 1/2" Hall Effect Flowmeter Control Water Flow Sensors The lowest working voltage: DC5V-24V Waterproof, heat resistance, pressurresistance, cold resistance, small size, stable and reliable. Easy to install. G1/2" male thread to fit on water pipe well. The flowmeter can be used in a wide ranges of instruments to measure the flow of fluid in pipes. Mainly used for water flow Switches control of electric appliances such as water heaters, humidifiers, drinking fountains. Specifications: Material:Nylon,Metal Working voltage DC5V-24V Water pressure resistance ≤ 1.75MPA Working flow ranges 1-30L/Min Output pulse duty cycle 50% ± 10% Output pulse low-level KDCO.5V (DC5V) Monitoring ranges 1-30L/Min Accuracy of 3% Installation type: Install vertically in the direction of the arrows Length:Approx.65.7mm/2.58'' Package Includes: 1x Water Flow 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.