Just under two years ago, Philips Hue launched its first MR16 spotlights with GU5.3 sockets. The big difference is that, unlike “normal” Philips Hue bulbs, they do not operate at 230 volts. Instead, just like classic MR16 bulbs, they run on 12 volts. This means that a transformer is required. However, some transformers can cause problems with the power supply.
Philips Hue introduces its own transformer for MR16 bulbs New product in Europe
New product in Europe