1Intelligent timer socket, suitable for lights, fans, kitchen appliances, mobile phone chargers, heaters and air conditioners, aquariums and other electronic devices. 2Programmable, 24 hour timing, minimum timing of 1 minute, timing of 168 hours, setting of 16 groups of on and off, one week cycle timing, week or day can be selected arbitrarily. 3Digital timing socket, with long term backup battery can keep your settings even in the case of power failure, bringing convenience to your life. 4Automatically switch on and off electrical equipment such as lamps, saving electricity time and costs, prolonging service life of electrical appliances. 5With countdown function, it can count down from 1 minute to 99 minutes. Mode functions include long on state, long off state or timing state.