Consists of one or two Lan 7R units, connected to the Lan 7S control unit, where card or button individual codes are stored.
The receiver/transmitter unit constantly receives/transmits a weak electromagnetic field by means of the built in coil. When the button or the card approach the unit, they absorb electromagnetic energy, which is then retransmitted by means of a signal which also contains the individual code.
The previously stored code activates the automation system control. Both the button and the card are fitted with a non-volatile memory which stores an individual code and therefore do not require internal batteries.
Ideally suited for activating entrance systems fitted to company premises, block of flats or wherever access to authorised personnel is provided.