Remote control, in particular for a locking device

A remote control arrangement for a locking installation, wherein said arrangement comprises:

• a control unit comprising:
• a first memory for storing key words,
• a first clock, and
• a first counter, said first clock driving said first counter, which produces a first count having lower significant bits and higher significant bits, wherein the lower significant bits of the first count form an address to read out a first key word from the first memory corresponding to the lower significant bits, which is combined with the higher significant bits of the first count to form an encoded key word which is transmitted by the control unit;
• and
• a reading unit comprising:
• a second memory for storing key words,
• an evaluating circuit,
• a second clock,
• a second counter, said second clock driving said second counter, which produces a second count having lower significant bits and higher significant bits, and wherein the lower significant bits of the second count form an address to read out at least one valid key word from the second memory corresponding to the lower significant bits, and the higher significant bits of the second count are provided to said evaluating circuit;
• wherein said evaluating circuit receives and combines said transmitted encoded key word with said provided higher significant bits to form a decoded key word for comparison with said valid key words;
• said reading unit further comprising means to enable at a positive key word comparison recognition of correlation between valid key words and an associated transmitted encoded key word, such that in the reading unit there is corrected a memory interrogation to current clock time or the clock time is corrected to a key word-value of a transmitting control unit to re-establish synchronism between said first and second clocks within the bounds of a predetermined degree of accuracy.