The Simplex 742-342 System Power Supply Board (cross-reference 566-071) is the OEM replacement power supply board for the Simplex 4100U and Simplex 4100ES fire alarm control panel families. When the system power supply board fails, the 742-342 restores regulated power to the panel and its associated initiating, notification, and supervisory circuits. The 742-342 is a direct replacement maintaining full compatibility with existing 4100U and 4100ES panel wiring and mounting hardware.
Key Features
- Direct replacement system power supply board for 4100U and 4100ES panels
- Cross-reference part number 566-071
- Genuine Simplex board — engineered to OEM specifications
- Board dimensions: 6 × 6 × 2 in. (approx. 3 lb weight)
- Restores regulated panel power to maintain NFPA 72 compliance
Compatible Panels
Simplex 4100U, Simplex 4100ES
Life Safety Consultants has supplied genuine Simplex fire alarm parts since 2002. To order the Simplex 742-342 or for compatibility questions, call 1-888-557-0558 or email sales@lifesafetycom.com.
Additional information
| Weight | 3 lbs |
|---|---|
| Dimensions | 6 × 6 × 2 in |
| Condition | New |
| Manufacturers | Simplex |
| Compatible Panels | Simplex 4100U, Simplex 4100ES |
| Cross Reference | 566-071 |
| Dimensions | 6in x 6in x 2in, Weight: 3 lbs, Condition: New |
