• MehBlah@lemmy.world
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    3 个月前

    Not all. The safety doors for roof access at our building only work in one direction, up. I’ve been told you can set any of them up to only work in one direction. Just like some can not be unlocked and require to key to open every time. Same doorknob different setup. But I agree that picture is from the inside.

    • SlippiHUD@lemmy.world
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      3 个月前

      The outside of those kind of doors pretty much universally, operate from the outside with a key. There may be some edge cases I’m not thinking about but they wouldn’t apply to a living space.

      • young_broccoli@fedia.io
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        3 个月前

        That specific type of lock doesnt use a key, they just have a spring loaded bolt (? sorry, dont know terminology in english) and no real locking mechanism. Thats what the deadbolt on top is for

      • MehBlah@lemmy.world
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        3 个月前

        I seriously don’t understand what you mean by that statement. I agreed with you that the picture was from the inside. All I’ve talked about is how they can be set where they only open if the handle is moved one direction. We have several of every configuration in our building.

        • SlippiHUD@lemmy.world
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          3 个月前

          Most handles have a part that is the “outside” which goes on the unsecure side of the door. Due to safety the outside of the handle has a way to operate it if it locks. Keys for keyed locks, or a bypass for privacy handles. I was saying if that was the outside of the door, it’s not a locking handle it’s a passage handle.

          The “inside” of a handle is the side that’s installed on the secure side of the door, and it’s the side you can access the screws that hold the handle on the door. On classroom and storage function handles, they can’t control the doors locking state from the inside, but they can always operate the handle to get out.

          By unsecured I generally mean the side of the door with the least restricted access. Like the outside of your house when thinking about a front door.