Recorded via iphone 6s recorder, very close to the source under blanket in bed. Source is already-cracked sunflower seeds being crushed by 2 fingers. Created a nice texture which could be used for unlocking purposes.
Unlocking the safety frontdoor with keys needs more than one turn. Then closing and locking it again. The second unlock has a pause before the mechanism finally unlocks the door. At the end the door is getting locked from the inside with keys.
This is the sound of a wooden door with a 5 leaver lock being opened, closed, unlocked and relocked. You will hear the door opening, closing and with the key in the lock and key turning. 192khz 24bit stereo wav.