The 7 Key Line Voltage Wall Switch is a versatile Bluetooth® wireless wall switch that offers seamless control. It provides 4 separate scenes, as well as raise, lower, and ON/OFF functions. Set up and re-program or re-group fixtures easily with our Genio app via a smart phone. The switch can be used to retrofit a standard wall switch. Compatible with all standard wall plates. Features • Bluetooth® 5.0 network technology enables the switch to be linked to one or more light groups via the Genio app • Easily retrofit existing wall switches (neutral is required)