Description Material Metal PlasticModel YF B1Rated Voltage DC 5VWorking Range 1 25L minWater Pressure 1 75MPaOperating Voltage Range DC 5 15VInsulation Resistance 100M ohmOutput Pulse Duty Cycle 50 10 Size about 4 4cmx1 9cm Conversion 1cm 0 3937 inch 1inch 2 54 cm Note Due to different producing batches product details might be a little different If you minding the difference please buy it carefully Please allow 1 3CM differs due to manual measurement Due to the different display and different light the picture may not reflect the actual color of the item Thanks for your understanding Package included 1 x Water Flow Sensor