sMRT Crewguard User Manual v1.1
MRT Ltd. © 2014
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Overview
The Crewguard is a simple low cost monitor/alarm unit which
continuously monitors its local area for an SOS signal from a Sea
Marshall beacon. It will raise the alarm within a few seconds of receiving
an SOS signal by automatically sounding an external alarm and flashing
all the LEDs on its display.
4.1
The Bridge Box can be flush mounted by cutting a hole in the mounting
surface. The unit can then be mounted using the four M4 nuts and bolts
provided or used with the supplied trunnion mount adjustable bracket.
4.2
In either case the display should be mounted on a smooth and stable
surface. The back of this unit has to be accessible for power supply
connectors. Ensure that there are no other vulnerable elements within the
mounting surface (e.g. electric cables, gas pipes or water pipes).
4.3
When installing ensure you leave space for the supplied antenna or if
using an external antenna, the cable connection.
An externally mounted Hi-gain antenna or whip antenna can also be fitted
(sold separately) to increase detection range.
External antenna with mounting brackets. Comes with 5m cable and plugs,
fitting, mounting bracke. Significantly increases monitoring area of MOB
system and provides coverage in radio blind spots.
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Mounting of the Crewguard box
PRODUCT NAME – CREWGUARD CG-121 MKII man overboard monitor alarm
