By using the Hello Fairy App, you can set a timer to control your lights' on and off times.
You can do this by accessing the control interface of your light and clicking on "settings", where the timer setting is located.
The setting function also includes features such as countdowns, device renaming, and device information.
Below is a picture showing where the timer can be set.
You should be aware that the timer automatically shuts off if the string lights controlled by Hello Fairy App are disconnected from the power source.