DIY Supplies:PlumbingModel Number:FS400ANote:The color of the item may vary slightly due to photography and your own computerImpeller inlaid stainless steel beads,always wearable.Flow range:1-60L/minInterior diameter:0.81 inchMinimum rated working voltage:DC4.5 5V-24VMaximum current:15 mA(DC 5V)Working voltage range:DC 5-18 VLoad capacity:10 mA(DC 5V)Operating Temp:80C,Operating humidity:35%-90%RHAllow compression:Water pressure 1.20 Mpa belowStorage Temperature:-25-+80CStorage humidity:25%-95%RHF=4.8 * units of flow(L/min)* time(seconds).About the Wiring:Red Connect Positive;Yellow OUT Connect signal output;Black GND Connect Negative.SUitable for water purifier,water heaters,credit card machines,water vending machines,coffee machines,smart card equipment,the boiler and and other flow measurement devices!Caution:Prohibite dramatic impact and chemical erosion.Prohibite throw or hit.Vertical installation,inclination is no more than 5 degrees.Media temperature should not exceed 120 degree.Colour:Blackmaterial:plasticPackage Contents:2* Water Flow SensorOnly the above package content, other products are not included.Note: Light shooting 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.