The device is easy to use. The device comes with 4 x AA batteries which are usually replaceable by anyone. It is an ergonomic and smart device for home or workplace.
Illuminated indicator
The contactless liquid soap dispenser has a white light indicator that will let you know with a red light when the batteries are getting low.
What kind of soap is suitable for use
This appliance is intended for use with a special liquid for liquid soap suds or ordinary liquid hand soap. The special liquid does not need to be diluted and can be used immediately. If you use liquid hand soap, it should be mixed with water in a ratio of 1:4-5 and mixed well. To determine if your prepared liquid soap is suitable for use with the device, rub it between the palms of your hands. The soap is suitable for use if it starts to foam and there are no impurities in the liquid.
Rotary switch
Set to ON or OFF position by turning the device head. When the switch is set to the ON position, the indicator will turn white.

Use foaming soap. 

NOTE: Batteries are not included.