Kindsion Replacement Projector Interactive Pen 69PVN for Dell S510, S560P, KS-69PVN

Draw and write freely like a regular pen, a must tool for using interactive function. Works as a computer mouse, navigating, selecting, and interacting with your computer programs. Creates a highly interactive and collaborative environment for schools and businesses, available on both Windows and Mac computers. The projector communicates with the interactive pen via infrared and ultrasound signals emitted from pen tip, so make sure transmission between the pen and the projector is not blocked. Powered by 2 AAA battery (Not Included), when drawing using the pen, hold it perpendicularly to the screen as much as possible; press the tip of the pen against the screen surface and move the pen accordingly