Suitable for 3 difference liquid: Foam, Soap and sanitizer.  Refillable bottle (1000ml) or disposable bag(800ml).  Lockable with window design.  With UV disinfection can kill virus on the hand.  Support DC and battery, the battery can use more than 30,000 times push.   Light indicator fir low power ,  Light indicator if something under the dispenser from the sensor and will stop working to avoid and leakage.