... ,18V, 24V < optional > ( supply voltage should be marked on order ) RF dimmer is a controller that can adjust brightness infinitely,its ... be marked on order )output: 1 channelnet weight: 100ggross weight: 130gexternal dimension: L110 Χ W56 Χ H34 mm RF LED DIMMER,DC5V, 12V ,18V, 24V