Auto Picker (5e Equipment)
From D&D Wiki
This tiny hand wound clockwork device fits neatly into the palm of your hand. When it is placed onto a lock, it will attempt to unlock it. It must be wound by hand for 1 minute prior to use. The auto picker must work for 10 minutes. After this duration roll a d10. On a 1, the auto picker jams, ruining itself and the lock (a ruined lock cannot be unlocked, and the DC required to pick it with theives' tools increases by 5). On any other result, the lock is picked.
If the lock is magical or otherwise cannot be picked with thieves' tools, or if picking it would normally require a Dexterity check of DC greater than 15, the auto picker will fail in its attempt.
Cost: 150 gp
Weight: 1 lb