YF-S201 Flowmeter 1-30L/min Liquid Flow Sensor

Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)

Specifications:
Supply Voltage: 5-18V DC
Working Current: 15mA Typica; at 5VDC
Flow Range: 1 - 30 L/min
Output Type: Pulse (Digital)
Pulses per Liter: 450
Thread Size: 1/2"
Maximum Pressure: 1.75MPa
Maximum Temperature: 80C

Wiring:
Termination: 3 pin 2.54mm pitch JST connector
Red - + Positive
Black - Negative (Ground)
Yellow - Pulse output (5V logic at 5V supply voltage)