Apollo Marine DIN-Rail Zone Monitor -55000-773MAR

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Apollo Marine DIN-Rail Zone Monitor -55000-773MAR The Marine DIN�Rail Zone Monitor powers and controls the operation of a zone of up to 20 conventional fire detectors from a loop of XP95 addressable detectors and ancillary devices. Operation This unit needs to be installed in a suitable enclosure and secured using end stops, part no 27447-528 or equivalent. The Marine DIN�Rail zone monitor is factory pre-set to return an analogue value of 16 when all detectors on the zone are in the quiescent state and 64 when a detector changes to the alarm state. The unit latches in the alarm state. A 5.1K end-of-line resistor is used to monitor cables for open and short-circuit faults. Alternatively, an active end-of-line monitor may be used in conjunction with diode bases and a capacitor of up to 50F fitted at the unit wiring terminals. In either case an analogue value of 4 is transmitted during open or short-circuit faults. The Marine DIN�Rail zone monitor is fitted with a bi-directional short-circuit isolator and will be unaffected by loop short-circuits on either loop input or output. Key Features Loop-powered Visible short-circuit LED Built in isolator

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