We have three LED downlights in a door porch. They're controlled from a 3 gang switch which also has switches for hall and landing lights. No neutral at the switch.

We're not at this house very often (inherited and trying to sell). We'd like to be able to control those porch lights remotely or by a schedule.

Access to the lights from the room above is reasonable.

Is there any device I can put in the circuit to achieve the above? It will need the ability to turn lights on and off manually.

Thank you.