150 Watt Remote Magnetic Transformer converts line voltage input to low voltage 12 volt output for powering Monorail, Kable Lite or Fast Jack low voltage lighting systems. The remote transformer must be installed in an accessible location (such as an attic or in a closet), and it is best to keep transformer within 20 feet of the power feed/junction box to prevent voltage drop. Protected by fast acting secondary circuit breaker. 12 volt magnetic transformers are LED compatible with 12 volt AC LEDs. Dimmable using a 600 watt magnetic low voltage dimmer, sold separately. Some buzzing may occur on low levels and may be reduced with a dimming de-buzzing coil, sold separately. ETL listed. Power feed or power feed canopy required, sold separately.