OpenSprinkler › Forums › Hardware Questions › Where do you buy 24vac transformers in Europe? › Reply To: Where do you buy 24vac transformers in Europe? May 13, 2015 at 12:58 am #37634 WokkeltjeParticipant If you have a doorbell in your house, then it is possible you already have a 220V/24V trafo in in your electricity pannel. My OS is located next to it so I have no need for seperate extra trafo. Of course you need to be able to place your OS nearby.
