Countdown timer function; timer power socket switch has countdown timer function, you can set a certain time to turn off household appliances, saving energy and CostsSecurityWhen you are not at home, you can have the lights turned off to keep potential thieves away and help improve the security of your home. Make your life easier and saferUsageThis socket timer has the function of automatically turning off electronic devices, effectively preventing electronic devices from overcharging. Very suitable for household lighting, fans, air conditioners, humidifiers, Christmas trees and other electrical appliancesCountdown settings6 different countdown settings can be set freely to meet your different needs, all you need to do is plug the product into a power outlet, then choose the desired settingFunctionThis power outlet switch is a countdown and simultaneously measures consumption ;energy, voltage, current and timing of electrical appliances as multi-function socketsNote: The data are all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.