What is the primary purpose of an EPO in a CCTV system?

In a CCTV system, the primary purpose of an Emergency Power Off (EPO) is to allow for emergency power off. This feature is crucial in situations where immediate shutdown of the CCTV system is necessary to ensure safety or to prevent damage. For instance, if there is a fire or another hazardous event, an EPO allows operators to quickly disconnect power, thereby minimizing risks to personnel and equipment.

This safety feature is especially important in environments where video surveillance systems are used to monitor sensitive areas or critical infrastructure. The ability to swiftly power down cameras and associated equipment can help in managing emergencies or security breaches effectively, demonstrating the system's integral role in overall safety protocols.

In contrast, the other options focus on aspects that, while important for operation and performance, do not align with the emergency safety context that the EPO addresses. Enhancing image resolution, providing power redundancy, and increasing storage capacity are related to the functionality and resilience of the CCTV system rather than immediate safety concerns during emergencies.