| CPC G07C 9/00309 (2013.01) [G07C 9/00896 (2013.01); G07C 2009/00793 (2013.01); G07C 2009/00928 (2013.01); G07C 2209/08 (2013.01); G07C 2209/61 (2013.01)] | 11 Claims |

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1. A method for remotely actuating an automatic building or enclosure closure, comprising:
a) transmitting actuation signals containing data for authorizing and performing an action of the building or enclosure closure by radio by means of a transmitter,
b) receiving the actuation signals by a receiver,
c) determining the authorization on the basis of the received data, and
d) controlling the building or enclosure closure to perform the action when authorization is available;
wherein step a) comprises repeatedly alternately performing the steps of:
a1) transmitting a first actuation signal on a first frequency within a first transmit time interval; and
a2) transmitting a second actuation signal on a second frequency within a second transmit time interval,
and wherein step b) comprises repeatedly alternately performing the steps of:
b1) receiving radio signals by the receiver on the first frequency using over a first receive time interval that is longer than the first transmit time interval, and
b2) receiving radio signals by the receiver on the second frequency over a second receive time interval that is longer than the second transmit time interval.
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