Easy to install in a 120V single-pole or 3-way circuit. Wallplate included. Only 1 dimmer switch can be installed per 3 way circuit Compatible with max 150W dimmable LED, CFL and 600W halogen & incandescent light bulb, min. Load for LED lights: 3W Rotating the side adjuster can adjust the dimming range and eliminate buzzing or flickering Precise light control with horizontal slider below the large paddle rocker switch 3 year worry-free warranty. UL listed. Only 1 dimmer switch can be installed per 3 way circuit. Can not control fans