Alarm Lock Trilogy T3 Easter Egg - Polite Electronic Lock

1) Enter program mode on the T3 by pressing the "A" button and the master access code.
2) Make a user access change or set the time (anything trivial).
3) Hold on the "A" button for 3 seconds to exit the program mode.
4) Listen to the beeps after exit:

In morse code, the lock will respond:
. . . . . --... ...--
E E E E E 73

The five E's in Morse code mean "error - forget it" and 73, loosely translated, means "have a nice day".

Another interesting thing: searching through Google, Napco acquired Alarm lock and started manufacturing the guts of this lock. Many hams use NAPCO gear. Coincidence?