I took the Nuki test to determine whether the Smart Lock Pro would work with my KABA lock. The result was no. Apparently my lock fails because I cannot use a key on the outside to open the lock when there's a key in the lock on the inside. Is there any way, perhaps with an adapter of some kind, to solve this incompatibility? Why I ask? The substitute for a friend's cleaning woman couldn't get the key to the friend's apartment from the cleaning agency, so when the friend returned home the apartment had not been cleaned. A device like this one could have solved that problem and others like it.