GLK240128-25/GLT240128 Including GLK240128-25-USB, GLK240128-25-422, GLT240128-USB, and GLT240128-422 Technical Manual Revision 3.0 PCB Revision: 4.0 or Higher Firmware Revision: 8.1 or Higher Revision History Revision Date Description Author 3.0 October 19, 2015 Revision to Commands for Firmware Revision 8.6 Clark 2.9 May 21, 2014 Revision to Commands for Firmware Revision 8.5 Martino 2.8 March 12, 2014 Revision and correction to Colour in Ordering Options Martino 2.7 September 9, 2013 Corrected Scripted Button/Key and Keypad Brightness Commands Clark 2.6 July 10, 2013 Updated Data Packet Size Definitions Clark 2.5 December 13, 2012 Added Firmware Revision 8.4 Commands Clark 2.4 October 23, 2012 Added Alternate Power requirement for YG units Clark 2.3 October 13, 2011 Major Command Additions Clark 2.2 March 8, 2011 Updated Electrical Specifications Clark 2.1 January 27, 2011 Filesystem Command Updates for Firmware Revision 8.1 Clark 2.0 November 3, 2010 Initial Release Clark 0.2 Updated Images Clark 0.1 Initial Concept Clark