Abstract:
Lock arrangement (100, 200, 400) and method for detecting the presence and location of a device (105) sending a radio signal, which lock arrangement comprises a lock case (201) that can be fixed into a door, which lock case (201) comprises a locking latch (202) and a latch mechanism. The lock arrangement further comprises at least two antennas (102, 103, 213, 403) fitted into connection with the lock arrangement and means (104) for receiving radio signals connected to the antennas. The lock arrangement is adapted to determine on the basis of the signals measured from the antennas (102, 103, 213, 403) on which side of the lock arrangement the device (105) sending a radio signal is located.