Computer peripheral for use in alarm system to protect e.g. door, of dwelling, has antenna transmitting radiofrequency signals i.e. alarm triggering signals, over predetermined frequency to alarm signal emitting devices

摘要

The peripheral (1) has an antenna (6) receiving radiofrequency signals i.e. emergency signals, emitted by detection sensors e.g. magnetic contact sensor, that detect a predetermined alarm condition over a predetermined frequency. The antenna transmits radiofrequency signals i.e. alarm triggering signals, over a predetermined frequency to alarm signal i.e. siren, emitting devices. A removable connection unit (7) is provided with a male universal serial bus (USB)connector that is connected to a female USBconnector of a computer terminal i.e. personal computer. An independent claim is also included for an alarm system comprising a predetermined alarm condition detecting sensor.