Closed-circuit television (CCTV) uses video cameras to transmit signals to specific monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point wireless links. CCTV is often used for surveillance in areas that need security,such as banks, casinos, shops, departmental stores and airports or military installations. Here is a remote-controlled CCTV switcher circuit to monitor six cameras on a single or dual monitor/TV. The salient features of this switcher are: Cameras: Six cameras with one way audio (audio incoming only). Operation: Fully remote controlled (infrared commander). Front display: LCD to display the camera selected and all other functions/parameters. Camera selection: Manual (you can select any camera of your choice by pressing number keys or camera up/down keys on the remote) and auto (the switcher selects the cameras one by one and holds videos of each camera till the preprogrammed ...