Atron 3 Mode Easy Light and Small Appliance Timer (Timed/Automatic/Random) Indoor White 3 Different timer options: Random, Timed, & Automatic gives you the most flexibility Photoelectric Control detects dusk to set the timer. Adjustable "Auto" mode dusk to dawn settings. The length of "ON" time: 2, 4, 6, 8, 10 hours MAX 500W INDOOR USE ONLY!