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15. , a screw and block an
enlarged head of the fastener. Each of the first and second open slots has a respective width that is larger than a first width of the
body of the fastener and smaller than a second width of the enlarged head of the fastener. When the mounting plate 800 is being mounted to a surface, the respective fasteners are fastened onto the surface via the first and second open slots, thereby holding the mounting plate 800 between the enlarged heads of the fasteners and the surface. Before the respective fasteners are tightened onto the surface, a position of the mounting plate 800 is adjusted by moving the mounting plate 800, including the first and second open slots, with respect to the respective fasteners. The first and second open slots 802 and 804 can therefore define two perpendicular directions of adjustment for the position of the mounting plate 800, and each of these two perpendicular directions of adjustment is associated with a respective range of adjustment defined according to a longitudinal size of the respective open slot. Further, in some implementations, the heads of the fasteners fastened into the first and second open slots 802 and 804 rises beyond the front surface of the mounting plate 800 by a head height. Referring to FIG. 7B, the rear exterior surface of the device housing 702 may include a second recess 724B and a third recess 724C configured to cover the heads of the fasteners fastened into the first and second open slots 802 and 804, when the device housing 702 is mounted onto the mounting plate 800. Each of the second and third recess 724B and 724C may have a respective depth substantially greater than the respective head height of the fasteners fastened into the first and second open slots 802 and 804. In some implementations, the mounting plate 800 includes a first fastener structure 806 located at a first end of the mounting plate 800, and the first fastener structure 806 is configured to mate with a second fastener structure 726 located at a corresponding end of the rear exterior surface of the device housing 702.
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, tightened to the plurality of wire terminals 720, the lines
extend beyond the first recess 724A, while the corresponding connections i. e. , at the plurality of wire terminals 720 do not rise beyond the rear exterior surface of the device housing 702. FIG. 8A is a mounting plate 800 configured to support a doorbell camera 106 in accordance
with some implementations, and FIG. 8B is a process 850 of mounting a doorbell camera 106 onto the mounting plate 800 in accordance with some implementations. The mounting plate 800 has a substantially elongated shape that matches that of the device housing 702. The mounting plate 800 has a raised edge, and is configured to receive the device housing 702. When the device housing 702 is mechanically coupled to the mounting plate 800, the device housing 702 sits on or within the mounting plate 800, and the rear exterior surface of the device housing 702 is disposed substantially close to, or come into contact with a front surface of the mounting plate 800, allowing the rear exterior surface of the device housing 702 to be wrapped in the raised edge of the mounting plate 800. In some implementations, the mounting plate 800 includes a first open slot 802 and a second open slot 804 that are perpendicular to each other. For example, the first open slot 802 may be aligned with and parallel to a longitudinal edge of the elongated mounting plate 800, and the second open slot 804 may be oriented to be perpendicular with the longitudinal edge.