The actual electrical connections are depicted in a circuit diagram. A wiring diagram is a drawing that depicts the physical arrangement of cables and the components they link. It is also known as artwork or layout, physical design, or wiring diagram. This project describes the technology to add remote control functions to electrical appliances.The goal is to build a black box where you can plug in a VAC device and control ON and OFF operations using a TV or DVD remote control (using a modulated infrared (IR) pulse train at 38KHz frequencies).