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Conventional 4-wire smoke detectors can be monitored through their alarm and trouble contacts
Activate on-board end-of-line resistors by setting “ON” switch SW100 (Channel A)
Two-wire loop connection
detector sensitivity is continually monitored and reported to the panel
— B501J Standard European flangeless base
JOHNSON CONTROLS M500MJ MINITOR MODULE Johnson Controls M300RJ Conventional 4-wire smoke detectors canJOHNSON CONTROLS M500MJ MINITOR MODULE
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