The TOPGREENER TGT08-4 is a countdown timer switch that replaces wall switches to control lights, fans, or other loads on a preset time delay. There are eight timer options to choose from, 1, 5, 10, 30, 45 min, 1, 2, 4 hours. Save energy and have peace of mind knowing that unused lights will always shut off.This timer switch is ideal in a variety of applications, from bathroom fan control to garage light control. Use the TGT08-4 to control the bathroom fan and clear out moisture after a shower. Or use it in the garage, where lights are easily forgotten.This timer switch works with most types of light bulbs, including LED and CFL light bulbs. A neutral wire is required for the switch to work properly.Set it and forget it with this countdown timer switch! To operate the timer light switch, simply select the desired time delay, and the switch will automatically turn the lights off after the selected time is up. A blue LED indicator is conveniently located next to each button and lights up when a time is selected. The indicator also helps for locating in the dark.Choose from eight timer options: 1 min, 5 min, 10 min, 30 min, 45 min, 1 hour, 2 hours, 4 hours. The lights and fan will turn off after the time delay is up!The LED indicator flashes two times after selecting the time delay and stays off. The LED mode can be changed to stay on for the duration of the time delay and will stay off after the time delay is up.The interchangeable face cover design allows for easy colour changes. Three face covers are included in white (comes pre-attached), light almond, and black.A broad time delay range means this timer is suitable for a variety of applications, such as the bathroom, bedroom, house fan, or garage.