Security-Center FU2938 Instructions D'installation page 15

Method of activation
The compact alarm system can be activated in different ways as follows:
1. By a negative input signal (0V DC) at [Strob Trig] or [Siren Trig]
or by a signal at the RJ11 plug
2. By internal tampering
3. By external tampering (cable severance)
Tamper mode
The compact alarm detects two types of tampering and activates the alarm
automatically.
Internal tampering contact
If the internal tampering contact is triggered (by opening the cover,
unauthorised removal from the wall), the compact alarm automatically
triggers the alarm via the strobe and the siren. The tampering alarm is
simultaneously issued at the tamper output. When the tamper contact is
reset, the alarm stops. In the radio version, the tamper signal is sent to the
alarm centre via the radio universal module.
Cable severance
If cables are severed, the siren and strobe are activated for 30 seconds
after 6 hours. In the radio version, the tampering is reported to the alarm
centre via the radio universal module.
Signalling
The compact alarm signals an alarm via the siren and/or the strobe light,
depending on the alarm input triggered. After one hour, the compact alarm
reduces the strobe frequency from 1Hz to 1/8Hz.
If the power supply fails, the siren and strobe are automatically activated for
30 seconds after 6 hours.
Alarm duration
The alarm always ends if the reasons for the alarm no longer exists and the
inputs are therefore no longer addressed.
However, if a control signal is received, the siren stops following expiry of
the maximum alarm time (3 minutes).
The strobe light does not switch off until the alarm is reset.
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