The Edwards 3-RS485B Network Communications Card represents a critical interface module for advanced fire alarm system architectures, designed specifically to expand network communication capabilities within complex commercial fire detection environments. This class B network communication card mounts directly to the 3-CPU(1) platform, enabling robust data transmission and integration across addressable fire alarm networks.
Engineered for professional installers working in mission-critical facilities, the 3-RS485B provides seamless communication support for both class A and class B network topologies, with dedicated capabilities for class B audio data transmission. Its precision-engineered design ensures reliable signal routing and network expansion for large-scale fire detection and notification systems in commercial, institutional, and industrial applications.
Key Features
- Direct compatibility with Edwards 3-CPU(1) fire alarm control platforms
- Supports simultaneous class A and class B network configurations
- Native class B audio data transmission capabilities
- Meets stringent NFPA 72 network communication requirements
- Designed for high-reliability commercial fire alarm system architectures
- Compact form factor allowing simplified panel integration
Typical Installation Contexts
The 3-RS485B is optimally deployed in complex fire alarm networks requiring advanced communication routing, including:
- Multi-story commercial office complexes
- Healthcare facilities with distributed notification requirements
- Educational campuses with interconnected building systems
- Industrial manufacturing environments with distributed monitoring needs
Standards Compliance
Edwards 3-RS485B network communication cards are rigorously tested and certified to meet the following industry standards:
- NFPA 72 – National Fire Alarm and Signaling Code
- UL 864 – Control Units and Accessories for Fire Alarm Systems
- UL 268 – Smoke Detectors for Fire Protective Signaling Systems
Technical Specifications
- Network Interface: RS-485 serial communication
- Communication Modes: Class A and Class B
- Data Transmission: Class B audio support
- Environmental Rating: Designed for indoor use in controlled environments
- Mounting: Direct mount to 3-CPU(1) fire alarm control platform
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 12 × 4.5 × 3.5 in |
| Condition | New |
| Manufacturers | Edwards |
| Part Type | Interface Module |






