No, you cannot set up colour sequencing.
No, you cannot use an app to control only the LED Extension Strips. Please take a look at our range of Smart LED Strip Kits.
Please use 24V 5A Power supplies and ensure the wiring is correct and power is ON. You can purchase a compatible power supply from us here.
Yes, these LED Strip Extensions are waterproof, IP65 rated.
Yes, you will need to pair these extension LED strips your existing LED Strip Kit or alternatively you can purchase the controller and power supply from us.