Yes.

Yes, this dimmer can be used with any regular decora face plate.

Not advised to use two of these dimmers in a location where the remote will signal more than one dimmer unless that is what you want. In other words if you have two of these IR dimmers side by side and you only wish to activate one, you'll need to cover the black IR window of the dimmer you don't want responding to the remote. Kind of pointless, no? There is no way of getting different remotes for each dimmer as they all use the same IR 'frequency'. This problem also occurs in rooms where there are highly reflective surfaces and you end up 'bouncing' the IR signal and hitting a dimmer on a wall behind you when you meant to dim the lights connected to the dimmer in front of you.