Features: To prevent particles and sundries from entering the sensor, filter screen must be installed at the sensor inlet. The water flow sensor shall be installed inside the equipment or indoors, and shall not be exposed outdoors or wet for long period under high temperature and other harsh environments, the installation of water flow sensor must avoid the environment and application of vibration and shaking so as not to affect the measurement accuracy of the sensor. When the magnetic material or the material that generates magnetic force to the sensor close to the sensor, its characteristics may occur change. Do not disassemble the water flow sensor without authorization to prevent damage. Any water flow sensor disassembled without authorization not in the scope of-warranty. This structural sensor has not been used, and there may be discomfort when it used for direct replacement, please put forward. Specifications: Material: Stainless Steel Rated-Voltage: DC5V Inlet Inner Dia & Outter Dia: 36.5mm Outlet Inner Dia: 33.9mm, Outter Dia: 47.5mm Thread Length: 19mm Working Voltage: DC3.5-24V Flow Pause: f=(0.45xQ) Q=L/Min Accuracy: 3% Working Pressure: 0-5MPa Working Temperature: 0-100℃ Size: Approx. 5.1x5.1x7.5cm/2.01x2.01x2.95in Package Includes: 1x Water Flow Sensor note: If the water quality too poor, please add filter screen at the water inlet. Do not exceeding the flow range to use.