A reset element is the set of conditions under which a trap becomes ready to trigger again.
No Reset: Short of completely rebuilding the trap, there’s no way to trigger it more than once. Spell traps have no reset element.
Repair: To get the trap functioning again, you must repair it.
Manual: Resetting the trap requires someone to move the parts back into place. This is the kind of reset element most mechanical traps have.
Automatic: The trap resets itself, either immediately or after a timed interval.