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The Notifier LEM-320 is an ONYX Series Loop Expander Module designed to provide additional Signaling Line Circuit (SLC) capacity in compatible Notifier fire alarm control panels. The module expands the NFS-640 and NFS2-640 to a second SLC loop and provides expansion for each LCM-320 installed in NFS-3030 and NFS2-3030 systems. The LEM-320 features plug-in installation, built-in degraded mode for improved system survivability, and supports SLC loop wiring distances of up to 12,500 feet (3,810 m) under specified Class B configurations.

LEM-320 ONYX SLC Loop Expander Module

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