USALight.com offers accessories for all types of transformers.
Part Number: ML814PR or 8150-9805-01-For use with Malibu power packs 200 watts and greater -Automatically turns lights on at dark and off during daylight hours -Combine with timer on Malibu power packs to customize On/Off cycle -Durable weatherproof construction -MFG Part # : 8150-9805-01