Notifier FDM-1 Intelligent Dual Monitor Module SF 09/02 they can also provide a

they can also provide a synchronized code 3 horn tone using the DSC sync modules

This module’s compact design allows it to integrate smoothly into existing fire alarm systems

auxiliary power for signaling appliances

They are listed to Underwriter’s Laboratories Standard UL 464 for fire protective signaling systems

which is intended for use with Siemens ─ Fire Safety low-voltage systems

Notifier FDM-1 Intelligent Dual Monitor Module SF 09/02 they can also provide aNOTIFIER's offers a variety of intelligent monitor modules for diverse applications. Monitor modules supervise a circuit of dry contact input devices, such as conventional heat detectors and pull stations, or monitor and power a circuit of two wire smoke detectors. Monitor modules model numbers include the FMM 1, FMM 101, FZM 1 and FDM 1. Data Sheet: FDM 1