Resistance to water pressure Greater than 1.75MPaworking voltage range DC5 ~ 15Vinsulation resistance Greater than 100mprecision [in 1 25L MIN] 5%high-level output pulses Greater than DC 4.7 V (DC input voltage 5 V)pulses of output low level less than DC 0.5 V (input voltage DC 5 V)Pulse service cycle of 9 outputs 50% 10%Note:Due to the different production batches, the details of the article may be a little different.If you care about the difference, buy it carefully.There may be a difference of 1 to 3 cm due to manual measurement.Because of the different screen and the different light,The may not reflect the actual color of the item.Thanks for your understanding.colour:BrassMaterial:metalsize:58mmPackage Contents:1* Water flow sensorOnly the above package content, other products are not included.Note: Light 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.