The Keyspan Presentation Remote Pro uses wireless RF technology to give you complete freedom of movement. It is compatible with almost all projectors. You can use this wireless presentation remote with both PC and Mac operating systems. With plug and play technology, it is ready for use without any software installation. The quick setup is especially convenient for those in sales or others who make presentations on a regular basis. The Keyspan remote has an operational range of up to 100' and has wireless mouse, audio and laser pointer capabilities. You can easily point out and call the audience's attention to specific parts of the screen. The two-button mouse control allows you to go back and forth between slides as you talk through all of your points. The RF receiver has an on and off switch, so you can preserve its battery life when it is not in use.