Are my Garden Lights AC or DC? Matt W 24 April 2020 06:24 Updated Follow Both the HOLMAN 2-Pin and 4-Pin Plug and Socket Lighting Systems use a 12V DC transformer. Related articles How many Deck Lights can I connect (daisy-chain) in one line? How do I set a timer on my Garden Lights? Can I connect my Garden Light Controller to multiple mobile devices? Why are my Garden Lights flickering? Comments 0 comments Please sign in to leave a comment.