Epson BrightLink 1485Fi 5000-Lumen Pixel-Shift Full HD Ultra-Short Throw 3LCD Interactive Laser Projector - Manual (Page 215)

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Using the Pens
Your projector came with a blue pen and an orange pen, identified by the color strip at the end of the
pen. You can use either pen, or both pens at the same time (one of each color) in built-in whiteboard or
annotation mode.
Make sure the pen batteries are installed.
Note: The pen turns off automatically after 15 seconds of inactivity. Hold the pen to turn the pen back on.
Note: If you are using two pens at the same time, make sure to use them at least 4 inches (10.16 cm)
apart to avoid interference.
1 Pen tip
2 Battery light
3 Function button
4 Attachment for optional strap or cord
5 Battery cover