Description The Simplex 742-346 NAC Panel CPU Board is a replacement module designed for the Simplex 4009-9201 IDNet NAC Power Extender Panels. It restores core processing and communication functions, ensuring reliable supervision and operation of notification appliance circuits. This board helps maintain consistent fire alarm signaling performance in facilities where safety and uptime are critical. Technical Specifications Part Number 742-346 Brand Simplex Manufacturer Johnson Controls Condition New/Never Used Surplus Category PLCs and Accessories Subcategory PLC Expansion Modules Part Type CPU Board, NAC Panel, Power Extender Panel Compatibility Simplex 4009-9201 IDNet NAC Power Extender Panels Supported NACs 4 Class B (expandable with option cards) AC Input 120 VAC, 3 A, 60 Hz Battery Input 24 VDC, 8 A Notification Appliance Power Output 24 VDC, 8 A Optional Expansion Cards - 4009-9808 Class A Adapter Card - 4009-9807 NAC Option Card - 4009-9809 IDNet Repeater Card - 4009-9810/9811 Fiber Optic Receiver Dimensions 7.5 × 7.5 × 7.5 in Weight 2 lbs Information About 742-346 The 742-346 is a Simplex NAC Extender CPU Board specifically engineered for the 4009-9201 IDNet NAC Power Extender Panels. It provides the control logic and processing required to manage up to four Class B NACs with expansion options available for Class A fault-tolerant circuits, additional NACs, IDNet repeaters, and fiber optic communication. The board supports both 120 VAC primary power and 24 VDC battery backup to ensure uninterrupted operation. Designed for compatibility with Simplex Fire Alarm Control Panels, the 742-346 helps maintain system reliability and code compliance. Key Features: Replacement CPU Board: Compatible with Simplex 4009-9201 IDNet NAC Power Extender Panels. Core Control Functions: Manages notification appliance circuits and system communication. Expansion Support: Works with optional adapter cards for Class A wiring, additional NACs, IDNet repeaters, and fiber optic receivers. Reliable Power Handling: Accepts 120 VAC input and 24 VDC battery backup with up to 8 amps output. Durable Construction: Built to maintain long-term reliability in life safety systems. Compact Design: Standardized size for secure installation and service replacement.
