Remote control. You can choose between 2/4/6 or 8 hours function, or you can switch "on" all the time or "off" all the time.
If you set the remote control for 2 hours, all the lights will switch off automatically after 2 hours. After 22 hours, the lights turns on again, and this will continue if you do not use the "off" button. Remember to remove the battery protection film before use. Inclusive 1x CR2032 battery. Only for indoor use.