Save energy by using the Maestro Countdown Timer in closets, attics, basements, and other low-traffic areas to ensure a light or fan is never left on for a long time. Use the Maestro countdown timer switch on exhaust fans (including high-efficiency fans) to reduce mold and mildew in places like bathrooms. Use the large tap switch to turn the timer on and off; use the rocker panel on the side to set the timer to the desired time-out option ranging from 5-60 minutes. Softly lit LEDs indicate the time remaining before turn-off. Complete the sleek look with a Lutron Claro screwless wallplate, sold separately.