2. 10A is a block diagram of a doorbell camera system that operates at a first camera mode and a second doorbell camera in accordance with some implementations, and FIG. 10B is a set of electrical connectors applied to couple a bypass unit into the doorbell camera system in accordance with some implementations. FIG. 10C is a block diagram of a doorbell camera system that has a voltage monitoring unit in a doorbell camera in accordance with some implementations. FIG. 10C is a block diagram of a doorbell camera system that has a voltage monitoring unit in a doorbell camera in accordance with some implementations. FIG. 10D is a block diagram of a doorbell camera system that has a voltage monitoring unit in a bypass unit in accordance with some implementations. The doorbell camera system 1000 includes a doorbell camera 106 having a doorbell button 1002, a camera module 1004, an LED indicator, a speaker, a microphone, a processor and memory including programs executed by the processor. The camera module 1004 further includes a lens assembly 704 and an image sensor array that are configured to capture images at a premises, and a wireless transceiver that is configured to exchange data with a remote server over one or more wireless communication networks.