Imprint bolts are used in conjunction with magnetic contacts to monitor window locks.
Magnetic contacts only monitor the opening, and not the closing, of windows and French windows. A partially open window is identified as closed by the magnetic contact.
Imprint bolts installed in the window frame hold the partially open window far enough open to allow the magnetic contact to recognise this and report an open window.
The terms have the following meanings:
Internally activated: The operator is present. Only the alarm devices allocated to the external device group (group 1) are activated. Internal group devices are not taken into account.
Externally activated: The operator is absent. All devices are activated.
Example: A single-family house is fitted with a Gira alarm control unit. There are motion detectors in the house as well as in the garden and on the approach to the house that are connected to this control unit. The windows also have glass-breakage sensors. Intruders looking to gain access to the house will be detected by the motion detectors in the house when nobody is home. In this case, all the other detectors and sensors (including those outside) should also detect unauthorised access. The alarm control unit should therefore be externally activated when leaving the house. If the family is at home, the motion detectors inside the house do not need to be activated. Unauthorised access to the property grounds should, however, still be detected via the motion detectors and, in the worst-case scenario, by the glass-breakage sensors. Therefore, the control unit should be internally activated here.
A block lock is used instead of a traditional deadbolt lock on house or apartment doors. This type of lock works via a traditional locking cylinder. The block lock allows you to activate or deactivate the alarm system when you open or close the door. Generally, the door is locked mechanically by turning the deadbolt once. Turning the deadbolt a second time activates the alarm control unit. In order to activate the control unit, information is required as to whether the system is ready for activation, i.e. whether all detectors are closed. If this is the case, a coil in the block lock is supplied with power to allow the deadbolt to be turned a second time. If the alarm system has not granted release for activation, for example because a window is still open, a mechanical block will prevent you from turning the key a second time. The information as to whether the system is ready for activation is transferred to the block lock from the associated alarm control unit. The activation contact in the block lock is also connected to the associated alarm control unit. Similarly, the security area can only be entered once the system has been deactivated via the block lock.
External alarm devices are displays of an in-situ alarm status.
Essentially, alarms have two tasks:
In VdS systems, the local alert will only take place in conjunction with a telephone dialler.
You can order a replacement key for the alarm control unit via your Gira specialist partner. However, this requires the specialist partner to have documented and provided you with the 3-digit key number upon installation.
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