Water Level Sensor Float Switch Polyimide You can use the multimeter

You can use the multimeter to measure DC and AC voltage

15 Serial (SER) 10 Power Supply (VCC) 16 Ground (GND) 8

V3-80mVp-p Voltage Adj

Laser Diode KY-008

Water Level Sensor Float Switch Polyimide You can use the multimeterA float switch is a device used to sense the level of liquid within a tank, it may actuate a pump, an indicator, an alarm, or other device. A float switch is a device used to sense the level of liquid within a tank. The switch may actuate a pump, an indicator, an alarm, or other device. Use them with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating, pumps, ponds,