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Tyco 801IB line isolator base for MX addressable controller loop circuits; isolates a shorted section while allowing the rest of the addressable circuit to function normally.
Tyco 5BI 5-inch isolator base for MX detectors; monitors loop voltage and isolates a shorted section while allowing the rest of the addressable loop to function normally.
Tyco 4B-I 4-inch isolator base for FC460 series detectors; snap-fits to a ceiling tile adaptor or screw-fixes; protects against short-circuit faults on the digital addressable loop. Supply voltage 20 to 40 V DC.