Features: Small size but practical. Large flow, high-precision and fast response. Good sealing effect, leakproof, wear resistant. High quality material, durable in use, easy to install. Can be used for landscape irrigation, water plant, district traffic control and more. Package Includes: 1x Water Flow Sensor Specifications: Interface Size: 6-points (G3/4) Inner Diameter/Outer Diameter: 16mm/26mm Thread Length: 17mm Working Power: DC5-18V Working Water Flow Range: 2-60L/MIN5% Pulse Output Ratio: 5010% Size: Approx. 3.8x6.6cm/1.50x2.60in note: Severe impact and chemical-erosion are strictly prohibited. Strictly prohibited to throw or collision the medium temperature should not exceed 120 degrees. The wiring mode red+black - yellow signal output, NPN signal. Instructions 1. To prevent particles and sundries from entering the sensor, a filter screen must be installed at the sensor inlet. 2. The water flow sensor shall be installed inside the equipment or indoors, and shall not be exposed outdoors or wet for a long-time 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. 3. When the magnetic material or the material that generates magnetic force to the sensor close to the sensor, its characteristics may occur Change. 4. 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. 5. This structural sensor has not been used, and there may be discomfort when it used for direct replacement, please put forward.