We know what he did and how he did it.
But we do not tell all and sundry on the internet about it.
There is not a standard code to use either the "Anti code" algorithm differs from ADT office to office.
Telling how to default on a public forum is not very security conscious is it.
Of course ADT want a new contract, that is how they and others make their money.
Get a local company in and have the panel changed, then this will never happen again. Or buy another make and swap over of you or your partner are capable. But you will not get defaulting info or anti codes on here or other responsible websites.
Alarm
December 2012