Code change
First find out if you are dealing with a D2700 or the newer enhanced version. Press any 2 buttons and *,if you get a green LED and 6 beeps it is the new version. Old version remove battery and press any button. New version remove battery, press any number for 10 seconds,release, reconnect battery, press and hold the A button within 3 seconds, 6 beeps, release A button. the lock is at default and ready to program. To program new version 12345 A1A new combo A new combo this will set a new master code, if you are only using 1 code to open the lock this should suffice.
Remove power pack and press and hold 5 for 10 seconds
replace battery pack and with in 5 seconds enter master code
12345 and it should be reset.
Make sure the batteries are new or full power
add code type 12345Q_ _ _ _ _Q
Example 12345Q55555Q
new code must be same length as master code
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