Maestro, 600W, 3A, Fan Timer, For Use With Incandescent & Halogen Bulbs Only, Use With Exhaust Fans To Reduce Moisture, Mold & Mildew In Bathrooms, Use With Lighting To Ensure Lights Are Never Left On For A Long Period Of Time, Minimum Requirement Of 0.3A Or 40W, Tap On To Start Timer, Touch Rocker To Adjust Countdown Time, Includes 1 Maestro Countdown Timer.