Technical Parameters Scope: Apply to water heaters, credit card machines, water vending machines, and other flow measurement devices!  Basic parameters 1, the lowest rated working voltage DC4.5 5V-24V 2, the maximum operating current of 15 mA (DC 5V) 3, the operating voltage range DC 5 ~ 18 V 4, load capacity ≤ 10 mA (DC 5V) 5, ≤ 80'C operating temperature range 6, using the humidity range 35% ~ 90% RH (no condensation state) 7, allowing less pressure water pressure 1.75Mpa 8, Storage temperature -25 ~ + 80 'C 9, save humidity 25% ~ 95% RH