Features: The turbine flow meter is made of high quality material, with long serving life This turbine flow meter is suitable for water heater, water treatment system Flow meter is s hock resistance, heat resistance, cold resistance, moisture resistance, durability This hall turbine flow sensor meter is used f or liquid flow rate control Small size, and easy to install Specifications: Thread size: DN50 G2" Flow range:10-200L/min Working voltage range: DC 4.5 ~ 12 V Load capacity: ≤10mA (DC 5V) Working temperature: ≤80℃ Humidity range: 35% ~90%RH (no frosting state) Water-pressure resistance: ≤1.75Mpa Storage Temperature: -25~80℃ Storage humidity: 25%-95%RH Output pulse high level: >DC 4.5v (input voltage DC 5v) Output pulse low level :<DC 0.5 V (input voltage DC 5v) Accuracy (flow -- pulse output): 10 ~ 300 L/min ±5% Output pulse duty ratio: 50±10% Output rise time: 0.04μS Output drop time: 0.18μS Insulation resistance: >100mΩ Fluid-pulse characteristic: Level test pulse frequency (Hz)=(0.5*Q) ±5%( horizontal test) (Q is flow L/min) Size: 9.2cm/3.62in Weight: 206g Package includes: 1 x Turbine Flow meter