Does the device have a backup battery source? What happens if there’s a blackout? December 15, 2021 20:05 Updated Vayyar Care does not have a backup battery source. In the event of a blackout, the device will not work. Related articles What happens if I unplug the Vayyar Care device from the power supply? Can Vayyar Care see through walls? Will picking up something off the floor cause an alert to be sent? If I experience false alarms, what should I do? What happens if there’s a fall?