This is a Philips Primaline 105/230-240v Electronic Transformer for use with low voltage 12v halogen lamps. Suitable for small downlight halogen applications due to its very compact and lightweight design. Includes a short circuit long lifetime: 50,000 hours dimming possible with Philips-approved Leading and Trailing Edge dimmers possible to connect two lamps for 70 and 105 W, and three lamps for 150 W. Indoor residential use including living rooms and decorative and accent lighting Professional applications including retail, offices, conference rooms and exhibitions.