Features: Screw free process, easy installation. It can be disassembled and cleaned easily. Large pipe diameter can also measure small flow. Suitable for garden irrigation, water heater and more. Can be used for long period, long service life and good reliability. Specifications: Material: Plastics+Brass Pipe Thread Size: 1''(G1) Rated-Power: DC=5V(3.5-24V) Water Pressure Resistance: ≤ 1.75MPA Working Power: DC5V-15V Insulation Resistance:>100M2 Flow Range: (1-50L/min) ± 5% Flow-Pulse Characteristic: (1.8xQ) Q=L/MIN ± 3% Output Pulse High Level:>DC4.7V (input voltage DC5V) Output Pulse Low Level:<DC0.5V (input voltage DC5V) Output Pulse Duty Ratio: 50% ± 10% Size: Approx. 8.6x3.8x5cm/3.39x1.50x1.97in Package Includes: 1x Flow Sensor note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.