Feature: Use the crowd: children, adults wash their hands/wash their hair/bath/wash their dishes! Use environment: washbasin/bathroom/hotel/public toilet/hospital/school, etc. 1. Infrared induction bubble generation in close field in 0,25 seconds, no need to press to avoid touching the germ, fully upgraded and automatic bubble generation, convenient and fast 2. Intelligent energy saving, battery lasts up to one year 3. Battery, economical Specification: Material: plastic; Size: 188*98mm/7,4*3,86" Inner diameter: 30mm/1.18" Colour white List of packages: 1 * automatic hand washer with sensor 1 * instruction in English! when you encounter such situations 1. No foaming: Please test directly with tap water, do not add any liquids, 2. If you can pump water: prove that it is not a problem with the machine Remember that the liquid you need to add should not be too sticky. It must be prepared in separate cups. Shake well and add to the machine. Be sure to add (water) a ratio of 12:1 (hand sanitizer) 3. If it is a viscous liquid, it will not foam 4. Be careful not to block the water pipe! 5. Under normal conditions, if you first add the liquid that causes the blockage, clean the water pipe and filter several times so that it can be used. 6. If it still doesn't work, leave a message 7. If you have professional foaming/soap water, I believe it will get better, no need to worry about clogging