Silent Knight SK-F485C Serial to Fiber Converter Card

Keep your fire alarm and security networks resilient and interference-free with the Silent Knight by Honeywell SK-F485C serial-to-fiber converter card. Designed for FACP installations, this fiber module converts SBUS panel communications to multimode fiber—extending reliable connectivity up to 1.0 mile (1.6 km) while protecting critical monitoring and alarm data from electrical noise. The SK-F485C supports data rates to 115.2 kbps and uses duplex ST connectors for robust Tx/Rx links, with automatic half-duplex transmit control to simplify integration across baud rates. Installers benefit from a compact footprint that mounts directly in compatible control cabinets or via the 5815RMK remote-mount kit for flexible deployment. Built for security, surveillance, and life-safety applications, the SK-F485C reduces troubleshooting and downtime while preserving signal integrity across long runs. Compatible with a wide range of Silent Knight FACPs, it’s an ideal upgrade for modernizing alarm communications and expanding network reach. Order the SK-F485C to strengthen your monitoring infrastructure and streamline installation on your next fire alarm or security project.

• Extend SBUS communications over multimode fiber up to 1.6 km to eliminate EMI and ground-loop issues for reliable fire alarm networking
• Seamless compatibility with Silent Knight by Honeywell FACPs for fast integration and reduced commissioning time
• Automatic half‑duplex data direction control simplifies setup—works with standard baud rates (up to 115.2 kbps)
• Compact board and optional remote-mount kit fit inside control cabinets to save rack space and streamline installations
• Industry-grade duplex ST fiber connectors and low attenuation ensure secure, low-latency monitoring for security and surveillance systems