The Bachmann 44910 EZ Command 5 Amp Power Booster in gray is a plastic digital control device designed for model railroads and trains. This AC power booster operates at 111 - 120 volts and is painted in a sleek gray color. Made by Bachmann, a reputable brand in the industry, this power booster is perfect for adding an extra boost of power to your model train layout. Its compact size and easy-to-use features make it a convenient addition to any model railroad setup.