124 HOUR MECHANICAL TIMER: The 24 hour plan is designed with 15 minute intervals that you can program the device to turn on and off with the device. This timer socket allow for extremely convenient and flexible time settings directly for 24 hour 15 minute intervals 2FLEXIBLE SETTING: Turn the timer plug dial to the current time, press the pin or pull up to adjust the on or off time, set the manual jumper switch to timer mode. Automatically turn on and off your electrical equipment at a predetermined time 3EASY TO OPERATE: Timer switches offer easy programming. Simply press the desired duration button to turn on the light, then keep the remaining buttons up. The schedule will automatically repeat every day, giving you convenient and easy control of your equipment 4APPLICABLE SCENARIO: This 24 hour timer socket is designed for a variety of electronic devices including TV, lighting, decorations, aquarium, water heater, diffuser, aquarium oxygenation, landscape light, water pump, etc. 5PLUG AND PLAY: Timer switch light socket support plug in power to use, easy timing, no need to worry. Mechanical timed power off, stable, quiet 1 xTimer Switch Socket