Leviton WSS0S-D0G 1-Gang Single Rocker Decora Switch, Gray Viewing mode: Allows push buttons to turn lights OFF and keep them OFF even when room is occupied (i.e. for slide or film presentations) Rocker style ON/OFF switching: provides remote control for manual-ON/OFF light switching of each light load at any time; top button = ON, bottom button = OFF Convenient multi-location (3-way or 4-way) switching: Mount switches anywhere, create 3-way or 4-way switches, control lights, motors, or other electrical loads, and reconfigure or relocate as needed Save energy: Create manual-ON/auto-OFF controls using LevNet RF switches and occupancy sensors or by programming all lights to respond to a single master switch Simple wireless control: Mount switches anywhere, create 3-way and 4-way switches, control lights, motors, or other electrical loads, and reconfigure or relocate as needed Viewing mode: Allows push buttons to turn lights OFF and keep them OFF even when room is occupied (i.e. for slide or film presentations) Rocker style ON/OFF switching: provides remote control for manual-ON/OFF light switching of each light load at any time; top button = ON, bottom button = OFF Convenient multi-location (3-way or 4-way) switching: Mount switches anywhere, create 3-way or 4-way switches, control lights, motors, or other electrical loads, and reconfigure or relocate as needed Save energy: Create manual-ON/auto-OFF controls using LevNet RF switches and occupancy sensors or by programming all lights to respond to a single master switch Simple wireless control: Mount switches anywhere, create 3-way and 4-way switches, control lights, motors, or other electrical loads, and reconfigure or relocate as needed Operating frequency : 315MHz