1Easy Installation: The air switch button easily fits into any sink or counter mounting drill hole between 1 1/4" and 1 3/4" 25" body can be installed on thicker surfaces such as granite, marble and Quartz 2 Safety: The power cord is UL certified and can be used for a long time. Suitable for 110V to 130V voltage 3 Good compatibility: Compatible with any garbage disposal (2HP), fully compatible with Garbage King, ISE, Moen, GE, etc. Note: Surface Diameter should be between 1 1/4" and 1 4/5" Suitable for standard sinks with liquid soap dispensers 4 Compact sizes: No power cord required, more convenient, space saving, no tools required for installation Plug into outlet 5 ABS cover: More Safe, durable, rust-free, will stay with you for a long time, maintain condition 6 Waterproof: can also be used with wet hands, protect your family, safe and reliable