The magnetic contact wireless s a sensor able to detect opening or closing doors or windows and transmits via radio an alarm signal. It is composed of two distinct elements: a case containing the magnetic contact and electronic card normally placed on the frame of the fixture and a small permanent magnet to fit on the mobile element of the fixture. The working is based on the closing and opening of a sensor capable to operate within a 10-15mm radius from the permanent magnet. it is always internally controlled by a meter charge that forwards via radio the battery lifetime and warns by a beeper and LED, the alarm of discharged battery. It’s available a double auxiliary block terminal independent from internal magnetic contact, where it’s possible to connect a second sensor, eg further magnetic contact, sensor for rolling shutters, or another type of sensor that uses a free NC contact. Internal electrical card manages this independent contact and the event of case opening and consequent sends a unique radio code. Other functionalities are the tamper, which is activated in the event of tampering of the enclosure, the tear can be activated by removing of the sensor installed, a software periodic supervision that communicates via radio the battery status, tamper, magnetic contact independent alarm condition. The radio protocol is a rolling code type, and unique code programmed in AUREL for each sensor. A LED shows radio transmissions, alarms, and test.