The digital pen is included with the ActivPanel 3, 4 and 4.5, and offered as an accessory to the ActivBoard 6 Touch and 10 Touch.
1159 – Can I use the Digital Pen with my ActivPanel?
ActivPanel Digital Pen User Guide
ActivBoard Digital Pen & ActivPanel Digital Pen RED Addendum
ActivBoard Digital Pen User Guide
EU Declaration of Conformity – ActivBoard & ActivPanel Digital Pen
No drag and drop or hold and drag on Touch 88 board
Activboard Digital Pen
Page zoom with pen not working on ActivBoard Touch 88″