Security and alarm systems not using GPS (Global Positioning Satellite System, the navigation method using satellites); detectors for the presence of persons or objects, including ground detection systems and microwave detectors; detectors for the detection of changes in objects; equipment for generating and transferring alarm signals and/or for transmitting a silent alarm; electric connection equipment; automatic telephony equipment; automatic dialling equipment also for dialling an emergency number; registration equipment; equipment for generating and transferring alarm signals; electronic and/or magnetic-code carriers for identifying and verifying data and persons; recording equipment for recording sounds and/or pictures; video observation equipment and installations; motion detectors and sound detectors; fire detection equipment and installations; access control equipment and installations; communication networks for the integration and control of several detection systems on a network; computer programmes to use in connection with security and alarm equipment