The Water Flow Sensor is light, nimble outline, small size and easy to install. The bearings used in the rotating part. There is an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry. Working voltage range: DC 3-24 V Output Waveform: Square Wave,output pulse signal. Waterproof, heat resistance, pressure resistance, cold resistance. Spcification
External Thread Diameter: G3/4" (BSP)
Frequency: F=5.5 * Q (L / Min)
Error: ±2%
Working Voltage Range: DC 3-24 V
Maximum Current: 15 mA(DC 5V)
Load Capacity: ≤10 mA(DC 5V)
Flow Range: 1-60L/min
Operating Temp: ≤80℃
Operating Humidity: 35%～90%RH
Allow Compression: Water pressure 1.75 Mpa below
Insulation Resistance: >100M OHM
Storage Temperature: -25℃～+80℃
Storage Humidity: 25%～95%RH
Output Waveform: Square Wave,output pulse singal
Cable Length:120cm

Note
1. The Water Flow Sensor is light, nimble outline, small size and easy to install. The bearings used in the rotating part.
2. There is an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.
3. Three wire connection: Red for positive, black for negative, yellow for pulse signal.