American Dynamics AD1676BX
American Dynamics AD1676BX appears to be a CCTV control panel. It features 27 keys, a single-digit LED readout and a thumb joystick. The keys use Datanetics DC-60 switches, that appear to be the undocumented linear version. American Dynamics have no part number record for the switches. The panel was built in 1997, which is interesting as it suggests that DC-60 was in production for longer than expected.