An automatic soap dispensers is specifically a hands-free dispenser of soap (both liquid soap and foaming soap),auto soap dispensers generally can be used for other liquids such as hand sanitizers, shampoos, or hand lotions.Auto soap dispenser are often battery-powered. The touch-free design dispenses the liquid when a sensor detects motion under the nozzle. The electronic components of soap dispenser allow for a timing device or signal (sound, lights, etc.) which can indicate to the user whether they have washed their hands for the correct amount of time or not.
Hands-free dispensers for water and soap/hand sanitizer have particular virtues for operating theatres and treatment rooms.