Fire-Lite MDF-300 addressable dual monitor module.

Compliance

• UL listed compatible
• NFPA 72 Style wiring

Key features

• Two independent dry-contact monitor inputs on a single SLC address
• Mounts to a standard 4-inch square electrical box
• Humidity rated 10% to 93% non-condensing
• Compatible with Fire-Lite ES-200X, ES-50X, and MS-9050 panel families

The MDF-300 is a dual-input addressable monitor module that supervises two separate dry-contact circuits — such as a waterflow switch and a tamper switch — from a single SLC address. This reduces wiring cost and address consumption compared to using two individual modules. It mounts to a standard electrical box and communicates over two-wire SLC using both LiteSpeed and CLIP protocols. Typical applications include sprinkler system supervision, conventional detector zone monitoring, and building auxiliary input integration.

Verify panel/device family compatibility before ordering.