Remote controls are one of the accessories of many devices, including video projectors. Due to their availability and high use, they are usually more exposed to loss or damage.

On the other hand, in many educational and office environments, due to the installation on the ceiling and at a height, it is not possible to access the control keys of the device to increase and decrease the volume, reverse or smooth the image and other settings. Therefore, awareness of some points in the use of remote controls will be better and longer.