The QO series offers a wall mounted toroidal transformer that is UL1838 listed for use in landscape lighting systems. The toroidal design offers NO VIBRATION or noise, as well as efficiency ratings in the 95-97% range. This offers typical power savings of 10-15% over standard stack laminated transformers.
The QO is available in a single transformer option from 150-750 watts. It comes with standard primary and secondary protection. A dual transformer design is available as well up to 2 X 300. The housing is available in either stainless steel or a powder coat finish.
Options include a cord & plug for easy set up, an internal astronomical time clock (replaces mechanical clock and photocell), pool & spa listing and custom colors. It is rated for indoor or outdoor use, and is fully dimmable with a magnetic low voltage dimmer.