The dutch company Visser Assembling Electronics, Alkmaar, working for and in cooperation with the dutch carpet-factory Forbo Krommenie, developed a system based upon the KIM-1.
The T4 system consist of a large portfiolio of RAM, ROM, EPROM, input (Analog and Digital) and Output boards. Also a videoram card was developed.

Scanned documentation and all photos of the system