Product Description The Westek Random Security Timer is easy to use; simply set the present time and go. The timer turns lights and/or appliances on and off at random times, and requires no programming. It keeps you from coming home to a dark house, and gives your home a lived-in appearance to help deter intruders while you are away. The timer limits the amount of time your lights are on, which reduces energy-use, and can help lower energy costs. It is an affordable way to automate your lighting up to 1875W (or 15 amps), and also control the amount of power they use. The timer is for indoor use only, and works with compact fluorescent or incandescent bulbs. It accepts 2 prong grounded plugs, and is ETL Listed. From the Manufacturer It's about style. It's about time. No setting or programming is required as this Timer randomly turns lights / appliances On/Off throughout the week. It gives a lived in look and is perfect for vacation homes. Westek has the timer for you!