In a power outage, the power supply bureau will cut off all the electrical appliances in the user's home, and these appliances need power to maintain normal operation. However, the camera itself does not have this function, which means that the surveillance camera can not get power through the wire, then the device will not be able to work.
A complete surveillance system is mainly composed of cameras and video recorders, and the surveillance monitor is an auxiliary and monitoring device. If the camera power outage is certainly can not work, the same will not play the role of monitoring, can not video. Therefore, in some important occasions, cameras and video recorders will consider the design and installation of UPS systems.