A 3 gang screwless dimmer switch in a black flush finish. Our intelligent dimmer modules are powered with soft start and flicker free technology. Trailing / Leading Edge Dimming Control. Trailing edge is recommended to prolong LED life Short Circuit and Overload Protection Self Recovering Thermal Fuse Each dimmer switch is sold individually.   SIZES & SPECIFICATION: Width: 152.5mm Height: 93mm Depth: 27.2mm