Specifications:
Frequency: F=21 * Q (L / Min) error: ± 2%, current can not exceed 10mA, 450 output pulses/liters, F=constant * units of flow (L / min) * time (seconds).
Flow range:0.3-10L/min
Working voltage range: DC 5-18 V
Operating Temp: ≤80℃
Operating humidity: 35%-90%RH
Pressure range: water pressure 0.8 MPa below
Storage Temperature: -25-80℃
Storage humidity: 25%-95%RH
Output Waveform: square Wave, output pulse signal.
ROHS Compliant.
Cable length:15cm.
Wiring:Red---VCC(+)
Black---GND
Yellow----Signal

Package include:
Flow Sensor x 1