Wireless 12v switches. No need for wires to the lights from the switches. No batteries. On composite boats, and composite tiny houses, this is huge. No need to cut into the composite to hide wires, nor fasten the wires to the composite surface. Built in dimmers and smart light sorting too. Around $320 for a kit. I probably spent 50 hours doing and connecting switches on the lunar lander. These would have been a bargain. Only scary part is the switches look like the flush button on my Toto toilet.