The Snap Power Guidelight has a perfect design, exactly like your regular plastic outlet cover plate, which makes installation quick and easy. It comes in the double duplex style as well as decor (one rectangular opening) style. You can choose between white, almond or ivory colors. One edge of the SnapPower has a photo sensor and three LEDs. When it is dark, the photo sensor signals the LEDs to turn on and when it is light again, the photo sensor turns the LEDs off. It installs within seconds and requires no wires or batteries. SnapRays Guidelight only draws about five milliamps of power and costs around 5 cents of power per year given current power rates.