Keyboard with BS-428 display alarm table OLYMPIA ELECTRONICS. 

The BS-428 keyboard is able to snap Vol alarm table 

BS-418. It has a screen that consists of 4 digits and 9 indication LEDs (Power, Z1, 

Z2, Z3, Z4, Z5, Z6, SCI CPU). A general password handling ON - OFF and 

choosing zones. A fire detection code. Six auxiliary codes used for controlling ON 

OFF, and zone selection with automation capabilities. Six indicative LEDs, one for 

each BS-418 panel. up to 4 keypads can syyndethoun a table.