Material : Brass Range : 2-60L/min Working Voltage : DC4.5-18V Rated Voltage : DC5V Output voltage (rated: DC 5V) : High level 4.5V and above : Low level 0.5V and below Pulse output duty cycle : 50+-10% Insulation resistance : 100M Ohm and above; Tightness : Seal up all the holes, and inflate with 1.75MPa water, after 1 minute, no leakage and deformation; -20-80 centigrade; Media : Oil, Water, Diesel, Gasoline