The Smartfade is very energy efficient. It's average energy consumption is 8 Watts and peak consumption is 15 Watts.
If the user is looking to replace the power supply, please follow these guidelines:
800mA 12V AC/DC to 1.2A 12V AC/DC peak. 15V DC max. 12V AC max.
Input is AC or DC capable. The unit will work directly from a step-down transformer with 9-12V AC output.