The Simplex 4905-9939 A/V Adapter Plate represents a critical interface component for advanced fire alarm notification appliance circuits, engineered to seamlessly integrate audio-visual communication systems within complex commercial fire detection environments. Designed specifically for professional fire alarm installation professionals, this precision-manufactured adapter plate enables reliable speaker and strobe mounting across addressable and conventional fire alarm panel configurations.
Compatible with a wide range of Simplex notification appliances, the 4905-9939 A/V adapter plate provides robust mounting infrastructure for critical life safety communication systems. Its engineered design supports precise alignment and secure attachment in challenging commercial and industrial settings, including high-rise office complexes, healthcare facilities, educational campuses, and manufacturing environments where reliable emergency signaling is paramount.
Key Features
- Precision-engineered mounting interface for Simplex speaker and strobe assemblies
- Compatible with standard electrical back boxes and commercial fire alarm mounting configurations
- Constructed from high-durability metallic alloy with corrosion-resistant finish
- Supports rapid, standardized installation in addressable and conventional fire alarm networks
- UL Listed and compliant with NFPA 72 mounting requirements
- Designed for seamless integration with Simplex Series 4900 notification appliance circuits
Specifications
- Manufacturer: Simplex
- Part Number: 4905-9939
- Material: Zinc-electroplated steel
- Mounting Compatibility: Standard 4″ electrical back boxes
- Compliance: UL 464, UL 268, NFPA 72 certified
Fire alarm technicians and facility managers will appreciate the 4905-9939’s robust design, which facilitates straightforward installation and ensures consistent performance across diverse commercial fire detection systems. Its precision engineering minimizes alignment challenges and supports rapid deployment in time-critical emergency notification infrastructure.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.4 lbs |
|---|---|
| Dimensions | 6.9 × 5 × 0.6 in |
| Condition | New |
| Manufacturers | Simplex |
| Part Type | Speaker |







