Panel was removed from a working system during an upgrade. Tested and working.
The wiring for the on-board speaker has been cut. See photos.
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Simplex 637-250 Master Operator Interface for 4100U/ES Panel$299.99
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Simplex 4100 637-250 Main Operator Interface Display Panel - TESTED$179.00
Simplex 4100-9111 637-250 Master Controller Display W/Power supply W/Citycard$800.00
Simplex 566-227 637-158 4100U 4100ES Fire Alarm CPU Motherboard TESTED WORKING$199.99
NEW FACTORY SEALED Simplex 4100-7153 637-900 Remote InfoAlarm FUI Display Rare$699.99
Simplex 566-071 4100-5111 4100U/ES System Power Supply SPS Board TESTED UPGRADED$1,499.99
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