The Simplex 742-346 is the replacement CPU board for the Simplex 4009-9201 IDNet NAC Power Extender Panel. It is the central processing unit that supervises and activates the panel’s notification appliance circuits (NACs). As a result, replacing a failed 742-346 restores full NAC supervisory and activation control.
When the CPU board fails on a 4009-9201, the NAC outputs lose their ability to supervise or sound notification appliances on command. Therefore, the 742-346 is the direct, drop-in replacement that returns the panel to service.
Simplex 742-346 Key Features
- Replacement CPU board for the Simplex 4009-9201 IDNet NAC Power Extender Panel
- Restores NAC supervisory and activation control after a board failure
- Genuine Simplex OEM part
- Direct drop-in replacement — preserves existing wiring and panel programming
- Maintains IDNet communication to the host fire alarm control panel
Compatible Panel
Simplex 4009-9201 IDNet NAC Power Extender Panel. For NAC extender panels of other model numbers, contact our team to confirm the correct replacement CPU board.
Order or Get Application Help
Life Safety Consultants has supplied genuine Simplex replacement parts since 2002. To order the Simplex 742-346 or confirm panel compatibility, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 7.5 × 7.5 × 7.5 in |
| Condition | New |
| Part Type | CPU Board, NAC Panel, Power Extender Panel |
| Manufacturers | Simplex |
| Compatible Panels | Simplex 4009-9201 IDNet NAC Power Extender Panel |
