Relocking after 2 minutes is a good feature to enable. It just provides the extra peace of mind that you don't walk away accidently pressing on the "unlock" button on the remote. I can't think of a scenario where you can get locked out by enabling this feature. If you unlock the door(s) and within 2 minutes does nothing, then the door(s) will relock. On the other hand, if you unlock the door(s) and open any door(s) within the 2 minutes time frame, this auto relocking feature is disabled.