Feature: 1. This is an economical timer switch, there are many options, this time switch is a direct plug‑in timer, used to control the electronic power circuit of the device 2. The product allows you to set up programs for a single day or various combinations of days, which has summer time change and random function 3. 8‑key timer function, hour, minute and day of the week time setting, provide summer time function. 12 hours / 24 hours mode optional 4. Automatically turn off electronic equipment, effectively preventing electronic equipment from overcharging. Suitable for home lighting, fans, air conditioners, humidifiers, Christmas trees and other electrical appliances 5. Built‑in rechargeable battery for memory program. Come with high accuracy and strong anti‑interference Specification: Item Type: Electrical Time Control Switch Material: ABS Working Temperature: -10~40℃ Minimum Time Setting: 1 Minute Maximum Time Setting: 7 Days Display: LCD screen Built-in Battery: 1.2V NI-MH. Package List: 1 x Electrical Time Control Switch1 x User Manual