SIMPLEX 4100 565-004 F REV F RS232 / 2120 DUAL COMMUNICATION FIRE ALARM BAORD

SIMPLEX 4100-6038 Dual RS232 Interface

SIMPLEX 565-415 RS232/ 2120 MODEM READY ASSY 4100-6038

SIMPLEX 4100 RS232 / 2120 MODEM CARD 565-415, 4100-6038

Simplex 565-004 RS232 Serial Dual Communication Card

Simplex 565-415 RS232/2120 Modem Card

Simplex 733-953 Power/Communication Harness for 4010 Panel USED TESTED

SIMPLEX 4100 565-004 REV C RS232 / 2120 DUAL COMMUNICATION FIRE ALARM BAORD