This Programmable Outdoor Timer is perfect for exterior lighting, seasonal lighting and fountains and ponds. Save energy and money by not leaving your Seasonal or Christmas lights on all night long. Give your home that "lived-in" look while you are away or program your lights to turn on before you get home. Each module comes with 20 On/Off settings, a countdown timer, and 3 random functions that allow you to program your lights to come on and off .# One Programmable Outdoor Timer # Mounting Screws .Programming is Simple Sometimes trying to program electronic devices is difficult and counterintuitive but you will have this indoor timer programmed in no time. The included instructions lead you through the initial programming in an easy to follow, step-by-step process. 7-Day Programming With this timer you can program your lights on a 7-day cycle, which gives the illusion you're home when you're on vacation. Give yourself added safety knowing and security with the random functions. With the random function on short your lights will turn on and off between 1-2 hours, long 2-4, or program your own random time in a specific 1-2 hour range. Weather Resistant The module includes a drip-proof cover design that keeps water away from the keypad and a mounting wall bracket for easy placement.