100% and high quality Features: Minimum rated working voltage: DC 5V-24V Maximum operating current: 15 mA (DC 5V) Operating voltage range: DC 5~18 V Load capacity: 10 mA (DC 5V) Operating temperature range: 80C Humidity range: 35% to 90% RH (no frosting) Allowable withstand pressure: water pressure below 1.75Mpa Storage temperature: -25 ~ +80 C Preservation humidity: 25% to 95% RH Output pulse high level: >DC 4.5 V (input voltage DC 5 V) Output pulse low level: Accuracy (flow--pulse output): 10~200L/min3% Output pulse duty cycle: 5010% Output rise time: 0.04S Output fall time: 0.18S Flow-pulse characteristics: horizontal test pulse frequency (Hz) = [0.2x Q] 3% (level test) (Q is flow rate L/min) Impact resistance: The product is packed well, free from the 50cm height X, Y, Z direction to the concrete surface without abnormalities, the accuracy changes within 5%. Insulation resistance: The insulation resistance between the Hall sensor and the copper valve body is 100 M or more. (DC 500V) Heat resistance: placed in 803C environment for 48h, returning to normal temperature for 1-2h without abnormality, and the parts have no crack, slack, expansion, deformation, etc., and the accuracy changes within 10%. Cold resistance: placed in -203C environment for 48h, returned to normal temperature for 1-2h without abnormality, and the parts have no crack, slack, expansion, deformation, etc., and the accuracy changes within 10%. Moisture resistance: After being taken out for 72 hours in an environment of 402C and relative humidity of 90% to 95% RH, the insulation resistance is 1 M or more. Pulling strength: Applying a pulling force of 10N for 1 minute on the lead wire, no looseness or breakage, and no change in performance. Durability: At normal temperature, 0.1MPa water pressure is introduced from the water inlet to turn on 1S, and 0.5S is turned off. Specification: Type: Flow Sensor Material: Plastic Applications: Suitable for automatic gas water heaters Features: Turbine flow sensor, instrumentation, measurement, insulation, impact resistance, durability, convenient and practical, tools Dimension: app.9.2cm/3.62in Color: Black Type: DN40, DN50 (optional) Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you