Water flow sensor 1/2", 1-30L/min

Description: The lowest rated working voltage: DC4.5 5V-24V maximum operating current: 15 mA (DC 5V) working voltage range: DC 5~18 v load capacity: less or equal 10 mA (DC 5V) use temperature: less or equal 80 degree operating humidity range: 35%~90%RH (no frost) allowing pressure: pressure 1.75Mpa temperature: -25~+80 c External threads: 1/2 #34; Red IN + Yellow OUT Signal output line Black GND - Application: water heaters, credit card machines, water vending machine, flow measurement device!