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 the alarm be canceled if everything is OK? If Wi-Fi connection is lost will Vayyar Care still work? In which countries is Vayyar Care available? Has the device been certified by the FDA?