1. You like to use your lights with the switch, but don't want them to be at full brightness when they switch on? You can select how bright your lights will be when you switch them on.
2. Memory mode means that when you select ON in Power outage recovery, the light will return to the state before power outage.
3. Custom means that when you select ON in Power outage recovery, you can set the brightness and color of the light when it is on.