Detector Module (SMD)

External detectors are connected to a detector module that is positioned within the secure area. The detectors are supplied with power from the SMD modules. Alarm information is evaluated in the SMD module and it is transmitted to by radio connection to the CVP, where it is processed.

Each module is equipped with fi ve double balanced inputs so that all common types of security detectors can be connected. If necessary, it is possible to connect other types of sensor (e.g. fl ooding level sensors). In addition, each module is equipped with two programmable outputs that can control other external systems (e.g. a spotlight or siren). As a special option it is possible to connect proximity identifi cation card readers (one per module) that will allow authorized persons with a valid card to switch detection of protected zones on and off, without the necessity to communicate with the operator of the central evaluation workplace. As with other events these events are also displayed on the screen of the CVP and are stored in the system log automatically. All connectors on the module are equipped with weatherproof covers.

To ensure the security of the module itself, each SMD module is equipped with an internal seismic detector with two sensitivity levels; e.g. to detect steps of a coming intruder, or the passing of a vehicle in the vicinity, or any handling of the module. Unauthorized opening of a module is signalled with a tamper contact. With the built-in microphone it is also possible to monitor sounds around the module, which can be used both for the purpose of monitoring the situation of SMD operation in the fi eld and in close proximity to its installation.

When positioned in the fi eld, a module is usually supplied from an internal battery that can be easily replaced without using tools. Depending on the situation it is also possible to use mains supply (from an external source), external batteries or a vehicle connection.