Autodoors are powered doors that open and close a lot faster than regular doors of the same material.
The autodoor draws 50 W of power at all times. If not enough power is available, the autodoor behaves just like a regular door of the same material.
Contrarily to the in-game description, not all autodoors allow unimpeded movement. Actually, a powered autodoor opens at 400% speed. This means that all powered autodoors that are not made of stone indeed do not slow colonists down. Stone autodoors, however, open only slightly faster than regular wooden doors.
A very fast moving pawn would be slowed even by the fastest autodoors, because none of them open instantly.
Since autodoors also close faster, they help in situations when a pawn needs to flee from a threat. The door will more likely than a regular door close before the pursuer can step through or block the door.
The below animation shows a comparison of different door types and materials (the animals all have the same movement speed of 5 c/s).
- Work to build an autodoor is 130% the value of the corresponding regular door.
- Most other relevant stats (except opening/closing speed) are identical to the corresponding regular door.
- Steel autodoors offer the best compromise of durability and speed. Even unpowered they are only slightly slower than wooden doors, but a lot less flammable.
- If fire immunity is required, a granite autodoor offers the highest durability of the stone doors (270 hit points).
- Due to the non-trivial power and materials cost, most bases want to use autodoors only in select locations.
- Stone autodoors are risky to use, because in times of power failure they will slow down colonists tremendously. This is especially painful because a blackout situation is very often also an emergency situation, where free movement is important.