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Issue date: 17 November 2006
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Motion sensor
12.8
With the Bodyguard key removed, if no movement is detected for approximately 30 seconds,
then a repeating audible ‘pre-alarm’ sound is emitted. If movement is then detected within a
further 15 seconds of commencement of the ‘pre-alarm’ – the alarm is automatically cancelled.
12.9
The pre-alarm can only be switched 'off' by the movement of the Bodyguard display unit or
Bodyguard key insertion. If the Bodyguard display unit is being tested this is accomplished by
tapping the side of the unit when in the vertical position.
12.10
However, if no movement is detected for approximately 30 seconds, then the
repeating audible ‘pre-alarm’ sound is emitted and at the end of a further 15
seconds a repeating audible alarm is emitted and the ‘ADSU’ icon is displayed
(see image right).
12.11
To silence the alarm – refit the Bodyguard key.
Distress signal unit (DSU) button
12.12
The DSU button is available to the wearer to signal an audible alarm for help
and assistance manually.
12.13
Press the yellow button in the centre of display unit to start the DSU alarm (see
image right).
12.14
A repeating audible alarm is emitted and the ‘DSU’ icon is displayed. Note
display shows system pressurised (see image right).
Note: The two blue
and two red
LEDs will illuminate alternately.
12.15
To silence the alarm – refit the Bodyguard key or remove and
then refit the Bodyguard key.
Reduced battery level
12.16
A reduced battery level will be indicated by the ‘low battery’ icon. This will occur whether the
Bodyguard key is in the unit or removed (see image below).
12.17
The unit emits a ‘bleep’ approximately every nine seconds to warn the wearer that the available
power is reduced.
12.18
When this icon is first displayed the unit will continue to operate for up to two hours. The ADSU
can still be activated during this time period and will maintain operation for up to two hours.
12.19
Any BA set found to have ‘low battery’ icon must be checked to ensure that it is connected to its
charging lead and that it is being charged.
Bodyguard key in
place – with no
pressure
Bodyguard key
removed - with
pressure
