Touchless Sensitive Motion Sensor: Intelligent infrared sensor technology, ultra-fast detection time. The sensor reaction is about 0.25 seconds and the scanning range about 5cm By limiting the volume level to 1ml per time and automatically avoiding repetitions. Place your hand under the contactless sensor. Motion sensor spray. The pump automatically releases disinfectants. They can prevent cross-infection during this sensitive period. 200ml Capacity and Easy Refill: 200ml large capacity, you don't need to add liquid soap frequently. Transparent strips can be used to monitor internal liquid consumption and keep track of the remaining amount of liquid. Battery and waterproof operation: the automatic soap dispenser works with 4 AAA batteries (not included) and has a a battery locking system. Has better water and slip resistance than most other soap dispensers. prevent water from entering the battery case and has a longer service life. IPX6 waterproof. Suitable for all types of liquid soap: the machine is compatible with all types of liquids such as And it is also suitable for shampoo, body wash, lotion and disinfectants.