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14.2 Setting the Communication Key
The Communication Key is used as a customer unique security key comprising a sequence of hex numbers. This
key is transferred in the lock (through the Admin card), and will be sent by the M-Unit to the lock at the beginning
of each communication session. This ensures that only a person knowing the key value in the lock can interact
with the lock using the M-Unit. Important: The key is not generated by the M-Unit application itself but by the
headend system and the M-Unit operator must enter these numbers at the initial M-Unit setup. The M-Unit will
simply pass these pre-set values to the lock in order to enter communication with the lock.
When the Communication Key selection is made, the M-Unit screen will display the last saved set of key values:
If no key values have been saved, the boxes will be filled with all zeros. Use the "Clear" button to empty all fields
and begin typing in new required values. If the boxes are initially empty, the focus will automatically jump to the
next box as each one is filled, thus facilitating rapid entry of new keys.
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