Feature:1. This water flow sensor is made of brass, owning stable operation, high temperature resistance, and low water pressure start2. Wide range of applications, can be used in water heaters, credit card machines, water vending machines, flow measurement equipment3. The water flow sensor is light in weight, flexible in outline, small in size and easy to install. The interface size is G1/2in inner and outer wire4. This water flow sensor is waterproof, heat resistance, pressure resistance and cold resistance, owning good operation performance5. The flowmeter is light and handy, easy to install. The connection is firm, the sealing performance is good and the problem of water leakage is avoided.Specification:Item Type: Water Flow SensorMaterial: BrassModel: YF-B20Interface Size: G1/2in female male threadFlow Range: 0.3-10L/minPulse Characteristics: F=11 x QInterface Mode: One end has 4 points of male thread that is approx. 20mm / 0.8in, G1/2, one end has 4 points of female threadWiring Mode: Red positive signal, black negative, yellow signal output.Package List:1 x Water Flow Sensor