The Epson BrightLink 710Ui includes the Touch Unit (interactive module), and two marker-like pens inside a case. These are pretty cool pens, as the tips rotate when in use to give a more realistic feel, and require a bit of pressure to activate. That’s why we are so adamant about using a hard-surface screen, whiteboard or wall, when using interactive projectors. A single jab could stretch a traditional screen surface, not to mention multiple times per day – add dozens of greasy fingers to the mix, and you’ve got yourself a disgusting screen surface. No thanks. Better to get a specialty whiteboard screen like the one Epson offers, use a regular whiteboard, or a smooth white wall to project.
The Touch Unit has some built-in magnets that allow it to attach to a whiteboard or mounted magnetic surface. Alternatively, it can be mounted into the wall with screws, and should be one inch above the top of the projected image. For this reason, many will choose to wall mount with screws, as it would be desirable to utilize the entire projection area, which may be encroached upon when attaching the Touch Unit to a whiteboard. Whatever your preferences are, Epson, as usual, has you hooked up.
As mentioned, the infrared camera works with the Touch Unit to produce the interactive image. How? The Touch Unit projects a veil of infrared light downward over the projection surface. When a pen tip or finger interrupts the light, the interactive camera perceives this as an action and the projector reacts accordingly. The Touch Unit connects to the projector via a cable, which is provided. After mounting the projector and the Touch Unit, it will need to be calibrated so that the projector can accurately determine the position of the fingers/pens in relation to the projected image. Epson has an easy guide for setting this up that you can access here.