The device is for liquid Alcohol hand sanitizer dispenser with sensor. Do not use liquid cleansing oil, high viscosity liquid like Gel hand sanitizer, shampoo, bubble hand soap, diluted hand sanitizer etc. Product Specification : 1. NO.5 Alkaline battery (AA)x4pcs (not included). 2. Battery life : About 10 months (sense ten times/per day) . please use ALKALINE BATTERY , battery performance, depending on the using conditions, battery life may be shorten. 3. Capacity : About 350 ML 4. Product Size : 86x128x192mm. 4. Weight : 345g (exclude the batteries). 5. IPX level : IPX4.