What does a normally open, timed-open (NOTO) contact do?

1. 1Closes after a delay when the coil is energized, and opens at once when it is off
2. 2Closes at once on energizing, and opens once the coil has been off for the set time
3. 3Opens at once when the coil is energized, and closes after the coil has been off a set time
4. 4Stays closed with the coil de-energized, and opens at once when energized