Water Flow Sensor YF-S401 - (0.3-6L/min)

The YF-S401 Water Flow Sensor is a compact, low-flow rate sensor designed to measure water flow between 0.3 to 6 liters per minute (L/min). It is commonly used in applications such as water dispensers, coffee machines, and precise liquid flow monitoring systems.

Specifications of YF-S401:

• Flow Rate Range: 0.3 to 6 L/min
• Working Voltage: 5V - 24V DC
• Maximum Pressure: ≤ 1.75 MPa
• Output Type: Pulse signal (Hall Effect Sensor)
• Flow Pulse Characteristic:
  • The sensor outputs a square wave signal.
  • Pulse Frequency (Hz) = 98 × Flow Rate (L/min)
  • Example: At 1 L/min, it generates 98 pulses per second.
• Internal Diameter: 4 mm
• External Diameter: 7 mm
• Connector: 3-wire system (Red: VCC, Black: GND, Yellow: Signal)
• Material: Plastic body with a magnetic rotor inside