Simplex 4100-7151 742-394 4100U CPU Card PCA Master Controller TESTED & WORKING

Simplex 566-227 4100U/ES CPU Motherboard Tested Working

Simplex 4020-8001 Main Operator Panel

New Simplex YM0164 Local Operating Console For 4100u Red Fire Alarm Panel

Simplex 556-880 2001-1007 Fire/Trbl Main Control Card for 2001 Panel USED TESTED

SIMPLEX 4100-1287 24 SWITCH 24 RED LED HOA MODULE FAST FREE SHIPPING c

Simplex 4100-1328 25V Digital/Analog 120VAC amplifier (parts / not working)

Simplex 637-849 FUI Keypad/Display for 4100ES Panel FOR PARTS/REPAIR