This kit is to upgrade Versalifts manufactured after June 1, 2020 from a CORDED or WIRELESS to an IN WALL SWITCH unit that has two switches, one goes upstairs, the other switch downstairs. The kit comes with the two switches, 50' of wire for the downstairs switch, 10' of wire for the upstairs switch. The downstairs switch has a key lock mechanism that can disable the unit from unwanted users. When engaged, it disables both switches for security.