Silent Knight ELR-47K Fire-Lite Resistor

Deliver dependable end-of-line supervision where safety and uptime matter most. The Silent Knight by Honeywell ELR-47K End Of Line Relay is engineered for fire alarm and security professionals who need consistent circuit monitoring and simplified system integration. As the ELR47K model from Honeywell's ELR series, this relay provides supervised end-of-line functionality for supervised detection loops and notification circuits, improving fault detection and reducing false alarm investigations. Built to Honeywell quality in the US, the compact relay delivers silent operation and durable construction suited to commercial and industrial environments. Installation is straightforward—compatible with a wide range of Silent Knight panels—so technicians save time on wiring and commissioning. Use the ELR-47K to strengthen surveillance and monitoring strategies across fire alarm, access control, and integrated security systems, ensuring circuits remain supervised and serviceable. Ideal for retrofits or new builds where reliability and compliance are priorities. Add the ELR-47K to your specification to improve system uptime and streamline maintenance—contact your supplier or place an order to upgrade your monitoring infrastructure today.

• Ensures reliable end-of-line supervision for fire and security circuits, reducing nuisance alarms and downtime
• Direct drop-in compatibility with Honeywell/Silent Knight panels for faster installation and commissioning
• Robust, US-made construction designed for long service life in demanding monitoring environments
• Silent, low-profile operation that integrates seamlessly into fire alarm and security systems
• Simplifies maintenance and troubleshooting by providing a standard ELR endpoint for supervised loops