Water flow sensor

Model: YF-S201.
Water flow sensor.
Specifications:
Operating voltage: 5 V - 18 V DC.
Current consumption: 15 mA (5 V).
Load capacity: 10 mA (5 VDC).
Output: pulsating square wave.
Flow Range: 1-30 L/min.
Average volume per pulse: 2.25 mL.
Pulses per liter: 450.
Conversion factor: 7.5.
External thread: 1/2" NPS.
Max. working pressure: 1.75 MPa (17 bar).
Operating temperature: -25ºC to 80ºC.
Material: black plastic.