Brand No Model HS01 Quantity 1 Color White + black Material PVC Specification Min rated working voltage: DC 5V~24V; Max working current: 15mA (DC 5V); Working voltage range: DC 5~18V; Load capability: <=10mA (DC 5V); Working temperature: <=80'C; Humidity range: 35~90%RH; Water pressure: <1.75Mpa; Storage temperature: -25~80'C; Storage humidity: 25~95%RH; Wire: red: in yellow: out black: GND; Internal diameter: 3mm; Frequency: F=88 x Q (Q is L/min); Error: +/-3L/min; Output 5280 pulse after flowing 1L water; Flow range: 1~5L/min Features Lightweight small easy to install; With stainless steel axis in the wheel abrasion resistant; Sealing ring would never leak water; All material meets RoHS standard Application Suitable for water heater automatic water dispenser etc. Other Install it in vertical inclination should not beyond 5 degree; Consists of plastic valve body water flow rotor and hall sensor; Used to check water flow; Rotor rotate and the speed change as water flow hall sensor output related pulse signal to control then controller regulate as per water flow English Manual/Spec Yes Packing List 1 x Water flow sensor (16cm cable) http://m5.img.dxcdn.com/CDDriver/CD/sku.221149.jpg