An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails.UPS for CCTV camera system is a UPS specially designed for CCTV camera system. Different from general UPS, CCTV camera system has special requirements for UPS. CCTV camera system is specially optimized according to the requirements of this scenario.