The BS-468/A is an 8 zone burglar alarm panel. Using the special expansion card BS-469 it can be expanded to 16 zones. Using the special expansion card BS-479, the panel acquires 32 wireless zones. For its operation, at least one BS-466 keyboard is required. Up-to 8 keyboards can be connected to the panel. Each keyboard has an additional zone for connecting magnetic contacts (zones 17–24). The main board of the panel has port for connecting an YET-205B-630 remote control receiver and an automatic telephone dialler. On the telephone dialler port you can connect a BS-465 wired PSTN telephone dialer or a BS-464 wireless GSM telephone dialer.