Smart cameras are generally divided into wired power supply and wireless power supply. Wired power supply cameras must be plugged into a power source to work, otherwise, they cannot maintain continuous power to sustain operation; wireless power supply cameras do not need to be plugged into a power source. Their power supply generally comes from the built-in lithium battery in the camera or from solar panels continuously charging the lithium battery, achieving the effect of long-term power supply to maintain operation.