Features High-quality material: The water flow sensor is made of high-quality material and has a long service life. Stable performance: the control flow sensor has a compact body and stable performance Installation: It can be installed at the water inlet of the water dispenser to control the flow sensor to detect the water flow Brand New: The water flow sensor is guaranteed to be 100% brand new and high quality. Applicable: water hall flow effect sensor is suitable for water dispenser, coffee machine, water filter Features:1. 100% brand new and high quality2. The water flow sensor is made of high quality material, long service life.3. It can install at the water inlet of the water machine to detect the influent flow4. Small body and stable performance5. Suitable for water cooler, coffee machine, water filter Specification:Condition: 100% Brand NewModel: YF-S402Monitoring Range: 0.3-6LAccuracy: 3%Wiring Method: Red +, Black -, Yellow For Signal Output (NPN Pulse Signal)Water Pressure Resistance: 0.35MPaOperating Voltage Range: DC5~24VInsulation Resistance: >100MΩAccuracy: (in 0.15-3L / Min) ±2%Flow Pulse Characteristics: f = (73 * Q)±2% Q = L / MinOutput Pulse High Level: >DC 4.7V (input voltage DC 5V)Output Pulse Duty Cycle: 50% ±10% Package List:1 * Water Flow Sensor Package List