Controlled Video Switcher can be a solution either to your existing or stand-alone composite video system. Using analog mixing technology, this device is meant for switching between several incoming (max.of 8) video signals. It is also for monitoring/switching several channels simultaneously by using the latest technology. The advantage of this tiny device(3.7"x2.7") is that it can be integrated into other signal processing applications without distressing about extra connections either internally or externally! It operates off 5V supply that can be furnished either by using the existing or an external power supply to your system