Layout Considerations



Careful consideration needs to be given as to the location of the control box and sensors. Every type of boat will be different, as will each owners preferences; there is no ‘one-fits-all’ recommendation, however if the following considerations and guidance are followed the best operating condition will be achieved.Control Unit

a. Discreet Location, to protect it from wilful damage and disablement the control box is manufactured void of any external logos or information which identifies it as an alarm, to further protect it a discreet location should be selected that also allows sufficient access to fit and maintain the unit.

b. Vicinity to power source, antenna and sensors, the location should also be such that the routing of cables can be minimised and when finished discreet. In addition an absolute must be the location of the antenna (see below) and the consequential cable route from the control unit.  It is essential that a fused (5A) 12V supply that is not switched by a Master Switch and ‘therefore permanently-on’ is used. NB 24V configurations are available.

Antenna location, there are different types of antenna available, depending on hull material and personal Antennachoice. Experience has taught us that it is impossible to say the maximum thickness of fibreglass that the standard self adhesive antenna will comfortably operate through, in some cases they have performed well through 25mm, in other situations 15mm has proven to limit the operation. One thing is clear, if the structure is of metallic construction the antenna will not operate effectively through it. It is essential that a ‘Through Deck’ antenna be used on metallic or thick fibreglass structures.  For fibreglass under 20-25mm thick the standard self adhesive antenna is better suited. In all cases test the operation of the antenna before any permanent fixings are made. Antenna are supplied with integral 5m leads, if this is insufficient 5m extension leads are available.
d. Sensor location.Beam Break

  • Beam breaks are IP69 rated and can (but don’t have to) be positioned in outside/wet environments, these are best positioned to detect any ‘prior to entry’ movement thus preventing damage to locks, doors etc., a simple cover will prevent accidental triggering by birds.
  • PIR sensors should be positioned so they cover areas of possible entry whilst avoiding areas of flashingPIR sunlight which can cause false sensing. High level corners usually provide the best positions with the sensor mounted such that it trisects the angle of the corner. If a dog or similar pet is to be left on board with the alarm armed then the PIR's 'Pet Setting' should be used, this will leave an area below a height out of range of the PIR sensor.
  • Magnetic Contact sensors can be fitted to opening hatches and doors, consider the routing of Magnetic Contactcable to the contacts.
  • Wireless sensors, it is recommended that they are mounted within 20m of the alarm control box and that there are no metal bulkheads between it and the control box

e. Siren, Strobe, External LED & External Beeper location.

  • SirenSiren, to have the maximum effect in alerting others around that there is an intruder the siren needs to be positioned so that it is not muted by enclosure or other sound barriers,  positioned inside an external vent allows good external sound travel and maximum discomfort to any intruder whilst restricting access thus preventing disablement of the siren.  A second siren can be fitted (if our high output sirens are used) to sound inside and out.  If other sirens are used they must not draw more than 1A collectively this would overload and damage the system, use of a relay would enable the operation of more powerful sirens.
  • strobeThe Strobe should be positioned so that it can be easily seen by others in the vicinity of the boat, most effective at night whilst the Siren will stop after 3 minutes the strobe will continue until the system is disarmed.
  • The External LED (used to indicate GSM & GPS Signal) should be positioned so that it can be easily monitored without the continuous flashing becoming an annoyance.
  • External BeeperThe External Beeper should be positioned so as it can be heard whilst boarding and alighting the boat but does not have to be in line of sight so can be discreetly mounted.

f.  Microphone & Speaker location, will, depending on their purpose, require mounting discreetly or conveniently.   Consideration should be given to protection from the elements, back ground noise, intended purpose and ease of use. The system is not primarily intended to be used as a phone it cannot be used to dial out (only receive calls), its primary purpose being to listen to on board activity to confirm if someone is legitimately on board and inform anyone on board that you are aware of their presence. When the system is called if a speaker is fitted there will be three rings and the call will automatically be answered.

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