Fire-Lite MDF-300 Addressable Dual Monitor Module

Optimize fire alarm and security monitoring with the Fire-Lite Alarms by Honeywell MDF-300 Addressable Dual Monitor Module. Designed for commercial and institutional systems, the MDF-300 supervises two independent two-wire Style B (Class B) dry-contact initiating device circuits at two consecutive addresses, simplifying zone expansion without extra modules. Built on Fire‑Lite’s LiteSpeed communication protocol, the module delivers response speeds more than five times faster than traditional designs, so alarms and supervisory signals reach the control panel faster for quicker incident response.

Technicians benefit from a single panel-controlled LED for straightforward status checks and faster troubleshooting. The MDF-300’s compact 4" x 4.5" x 2.1" footprint fits standard enclosures and installs quickly, helping reduce labor and downtime. Ideal for fire alarm, security and surveillance integrations, this addressable monitor module supports reliable monitoring of dry contacts across schools, hospitals, retail and commercial buildings. Backed by Honeywell quality and a 3-year limited warranty, the MDF-300 is a practical choice for upgrading or expanding addressable control panel modules. Contact sales or order online to add robust, high-speed monitoring to your system.

• Monitors two independent two‑wire (Style B / Class B) dry-contact initiating circuits at consecutive addresses, reducing wiring and improving zone supervision
• LiteSpeed communication for faster panel response and quicker event reporting, minimizing investigation time
• Single panel-controlled LED for clear, centralized status indication during testing and maintenance
• Seamless integration with Fire-Lite/Honeywell addressable control panels for simplified commissioning and diagnostics
• Compact, standard-size module (4" W x 4.5" H x 2.1" D) fits easily in control cabinets, saving space and installation time