The Advanced Surface Mount Switch with C-Monster 2.0 can be added for easy access and operation in different locations, features 3 speed settings, double click Auto Up/Down, and independent control of multiple anchors. It can be installed using the included 3M® waterproof adhesive or stainless steel screws. NOTICE: Pairs with C-Monster 2.0 equipped anchors only. Products produced prior to 2017 are NOT compatible.