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TFurther, the first fastener structure 806 may include a snap fastener configured to lock onto the respective fastener structure 726 of the device housing 702. Once locked onto each other, the snap fastener 806 and the respective fastener structure 726 securely hold the device housing 702 onto the mounting plate 800, thereby onto the wall or doorframe surface to which the mounting plate 800 is mounted. Alternatively, in another example, each of the first and third fastener structures 806 and 808 includes a respective snap fastener door alarmconfigured to lock onto the respective fastener structure 726 or 728. The mounting plate 800 may include an opening 810 configured to let through one or more electrical wires, such as the power supply line and the ground smart smoke detectorline that can be electrically coupled to the plurality of wire terminals window alarms720 of the doorbell camera 106. In some implementations security key fob, in accordance with the process 850 of mounting the doorbell Glass break sensorcamera 106, the mounting plate 800 is fixed onto an area Cove Alarm Panelof the surface where the power supply line and the ground line are located rline;" href="https://www.covesmart.com/products/indoor-camera">Motion Activated CameraAlarm Panel, pass through the opening 810, and are connected pandoto the plurality of wire terminals 720 located at the rear exterior Lunasurface of the doorbell camera 106.