Brass material ,switching signal,apply to water pump,water treatment equipment,circulating water,hot water project etc. Technical parameter: 1. Water quality requirement: Drinking water health standards, under 60 2.Start Flowing Rate: 10L/min 3.Withstand hydraulic pressure: 1.75MPa 4.Voltage/electric current: DC220V/AC250V, 1.0A 5.Switching power: 70W, normally open,(NO) 6.Insulation resistor: 108, 7.Switching life: 108 times, Switching response time: 0.35ms 8. Installation method: Vertical 9.Material: Brass 10.Thread Size: G1/2" , DN15 Note: Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Thank you Package included: 1 *.Water Flow Switch