The 12V Dimmer Switch by acegoo is designed for use in RVs, boats, trailers, and trucks. It has a sleek black color and a compact size of 3.35x2.48x2.05 inches. The switch is made of durable plastic material and has a push-on terminal type for easy installation. It is designed for LED and halogen lights, with an operating voltage of 12.0V and a maximum current of 4.0. The dimmer switch also includes installation instructions and weighs only 0.15 pounds, making it a convenient and reliable option for controlling lighting intensity.