Simplex 565-691-RC
Simplex 565-691-RC
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Simplex 565-691-RC 4004 System Board Assembly (US)
Main system board for Simplex 4004 Fire Alarm Control Panel, providing core processing and control functionality. This is a professionally reconditioned unit restored to original specifications with 2 IDCs and 2 NACs (expandable to 8 IDCs).
Key Features:
• Main System Board: Primary CPU board for 4004 FACP operation
• Standard Configuration: Includes 2 Initiating Device Circuits (IDCs) for fire detector zones
• Notification Circuits: Provides 2 Notification Appliance Circuits (NACs) for alarm signaling
• Expandable Architecture: System capacity expandable to 8 IDCs through additional modules
• Supervised Operation: Battery-backed and electrically supervised for continuous protection
• Reconditioned Unit: Tested and restored to full factory functionality
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