Johnson Controls M300RJ Addressable Relay Control Module FlashScan USED TESTED
Used, tested and working.

Has some wear from use; no cover plate included.
For use with Johnson Controls addressable fire alarm panels running FlashScan/CLIP protocol.

The M300RJ is an addressable relay module for use on Johnson Controls fire alarm panels. Each module contains 2 Form-C contacts controlled by the fire alarm panel.