Features Durable: The product is well packaged. It falls freely from the X, Y, and Z directions of 50cm to the surface of the concrete without abnormality, and the accuracy changes within 10%.Flow Rate Range:1~30L/min Insulation resistance: The insulation resistance between the Hall sensor lead wire and the valve body is 100 MΩ or more. (DC 500V).Pressure Allowed:<1.75Mpa Water Pressure Heat resistance: placed in 80 ± 3 ° C environment for 72h, return to normal temperature 1-2h without abnormalities, and parts without cracks, slack, expansion, deformation and other phenomena.Maximum Working Current: 15mA(DC5V) Cold resistance: It is placed in the environment of -20±3°C for 72h, returning to normal temperature for 1-2h without abnormality, and the parts have no crack, slack, expansion and deformation. Insulation withstand ability: The Hall sensor lead wire and the valve body are pressurized by AC600V (50/60Hz) for 1 second without insulation abnormality.1 x Flow Meter Specification: Thread: G1/2 Male-Male Flow Rate Range:1~30L/min Voltage: DC5V Flow Rate:1~30L/min Accuracy:5% Maximum Working Current: 15mA(DC5V) Working Voltage Range:5~18V Working Temperature Range:0~120℃(Without Ice) Working Humidity Range:35~90%RH(No frosting) Pressure Allowed:&lt;1.75Mpa Water Pressure Storage Temperature:-20~+80℃(No Ice) Storage Humidity:25~90%RH Length :52mm / 2.05in Output Pulse High Level:&gt;DC4.3V(Input DC5V)&nbsp; Output Pulse Low Level:&lt;DC 0.5V(Input DC5V) Flow Pulse Characteristics: F = 10.0 * Q Flow Per Minute -3 Output Pulse Duty Cycle: 50% ± 10% Output Rise Time: 0.04 μS Output Fall Time: 0.18 μS Wiring Diagram: Red Wire: Positive Power Supply Black Wire: Negative Power Supply Yellow Wire: Pulse Signal Output Package List: 1 x Flow Meter Note: Severe impact and chemical attack are strictly prohibited. It is strictly forbidden to throw or collide. Horizontal/vertical installation in any direction. The temperature of the medium should not exceed 800 ℃. Package List