Frequency: HZ = (6*Q-2)* Q =(L / Min)voltage output of the premium: 3.5-24VDCa liter of water flow after pulse output 358Flow range: 2-60L/minInner diameter/Outer diameter: 20mm/32.7mmScrew length: 13mmIt can be used for:Apply to food, credit card machines, water vending machines, and other flow measurement devicesLowest rated operating voltage: DC4.5The maximum operating current: 15 mA (DC 5V)Operating voltage range: DC 5 ~ 24 VLoad capacity: Less than or equal to10 mA (DC 5V)Operating temperature range: Less than or equal to80 Operating humidity: 35% ~ 90% RH (no condensation state)Allow pressure less pressure: 1.75MpaStorage temperature: -25 ~ + 80 Storage humidity: 25% ~ 95% RHColour:BlackMaterial:ABSPackage Contents:1 x DN25 Water Flow SensorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.