1、The Turbine Flow meter is made of high quality material, with long serving life 2、This Turbine Flow meter is suitable for water heater, water treatment system 3、Flow meter is Shock resistance, heat resistance, cold resistance, moisture resistance, durability 4、Small size, and easy to install 5、This Hall Turbine flow sensor meter is used for liquid flow rate control 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 shock resistance, heat resistance, cold resistance, moisture resistance, durability This hall turbine flow sensor meter is used for liquid flow rate control Small size, and easy to install Specifications: Thread size: DN40 G 1.5" Minimum rated working voltage: DC 4.5v-12v 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 Working range: 5-150L/min 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 Fluid-pulse characteristic: Level test pulse frequency (Hz)=( 0.5*Q) ±5%(horizontal test) (Q is flow L/min) Size: 9.3cm/ 3.66in Weight:146g Package includes: 1 x Turbine Flow meter