Infrared sensors detect infrared energy that is emitted by one's body heat. When hands are placed in the proximity of the sensor, the infrared energy quickly fluctuates. This fluctuation triggers the pump to activate and dispense the designated amount of soap.
Why is my sensor soap dispenser not working?
The sensor area is obstructed by soap residue. Turn the unit off and wipe the sensor with a clean, soft, damp cloth. The batteries are not installed correctly. Install the batteries properly.
How do manual soap dispensers work?
Manual dispensers of foam soap often consist of a large button which squeezes the foam out of a tube. ... The majority of manual foam soap dispensers have the soap in a bladder in the dispenser in liquid form, as the pump is pressed the liquid soap is pushed through a small foaming nozzle which foams the soap.