Let there be light! Simple and safe to use, the Underwater Transformer UST 150/A/01 is compatible with the LunAqua 10 Lighting System. It can power up to 150 watts of lights: 4 x 35 watt bulbs, 3 x 50 watt bulbs, 2 x 75 watt bulbs, or 4 x 10 LED spotlights. Totally weatherproof, this transformer can be used underwater and offers additional flexibility with a 20. ft./6m main power cable. UST 150/A/01 underwater transformer is compatible with the LunAqua 10 light system. Each component of the LunAqua system is sold separately and can be customized to the application. The system is perfect for illuminating gardens, home pond or professional fountain installations. This transformer is uniqueit can be installed above or below water level. Installation below water level hides all cable work within the pondreducing the need for long cable runs and minimizing voltage drop. The critical component of the LunAqua 10 system, the UST 150 transformer provides 120V of power. Its primary current is 120V/60Hz and secondary current 12Volt. Dimensions are 6 x 5.1 x 3.5 in.; it weighs 9.8 lbs. It comes with a 2-year guarantee.