The Swann BNC DC CCTV Security Video Camera DVR Data Power Extension Cable is a unit that provides a convenient 18m length for extending power and data connections for CCTV security systems. It is designed for both indoor and outdoor use, featuring waterproof and night vision capabilities. This cable is compatible with Google Assistant and Amazon Alexa for smart home integration, and is suitable for use with Swann surveillance technology, offering maximum resolution of 4k (FHD) for high-quality video monitoring.