Without a Bridge, you can only control the lights when you're at home. You can also control up to 10 lights.

If you use your old light switch, your lights no longer have power. So you can't reach them anymore via the app. With this module, they stay connected.

Ensure that your lights turn on automatically when there's movement. This way, you don't need an app when you enter a new room.

With a bridge, you can set routines and control the lights remotely.