version 1. 0. 3 Nov-2015. Features: Surveillance. Purpose-Considerations-Securing. CCTV's strengths. CCTV's limitations. Operation. CCTV diagram. IP-CAM diagram. Types of cameras. CCTV features. DVR. CCTV Monitoring. CCTV resolution. CCTV's chip types. CCTV's lenses. LUX. CCTV attachments. CCTV lenses calculator.