With the wedge backplate, you can tilt the 2N IP Solo intercom by 25°. It gives you more options to cover the area in front of the door. There are two basic scenarios when you can use the wedge backplate. In the first, the intercom is on the same wall as the door, and you want to cover the door with the camera's field of view. In the second, the intercom is on the wall at right angles to the door, and you want the camera to also cover the whole path leading up to the entrance.