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When teaching with classroom projectors you can use a laser based on screen pointer that is operated with a remote control. Your classroom projector will most likely come with a remote control, but you can purchase an additional remote control with added features and capabilities that will assist you in your teaching. You will need to make sure that your selected remote control will be compatible with your projector, but for features such as pin point accuracy from over 100 feet away, and no need for direct line of site targeting, a wireless remote control can make a world of difference to your teaching experience.