Action

The amount of time needed to make a Disable Device check depends on the task, as noted above. Disabling a simple device takes 1 round and is a full-round action. An intricate or complex device requires 1d4 or 2d4 rounds.

Try again

Varies. You can retry if you have missed the check by 4 or less, though you must be aware that you have failed in order to try again.