Here is where you can see the video manual and assembly videos.  In addition, you can download the text manual.

the_4x4_matrix_keypad_processor_set_manual.doc
File Size:	15641 kb
File Type:	doc

Download File

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4x4_keypad_matrix_manual.pdf
File Size:	2919 kb
File Type:	pdf

Download File

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Video Manual:

V1.0 Assembly Video:

V2.0 Assembly Video: