This device/build/mansion is a giant structure with a library inside. When placing a button where indicated in the picture, a piston door will open into a room with a gold wall and 2 redstone torches. Then, a switch on the inside will lock the piston door so that no one can follow you in.
Now, take the redstone torches, and place one on the top, in the center. This will open another door. This provides even more security. Once in the combonation lock room, place the second torch on the top center of the opposite side of the gold wall, which will lock the second piston door.
Now, Enter the combonation 1,2,5,6. The iron door will now open, leading into a potion room.

This isn't your average potions room. It is a redstone powered one which will give you all of the exact ingredients required to make a potion. Firstly, look at the switches on the sides. If these effects apply to your potion, hit them. now, above the potion stands with the marked signs, hit the button to indicate what kind of potion you want. All of the ingridients will fall on the netherbrick block, allowing you to now brew the desired potions. This brewery design is based off of CNBminecraft's design, with very minor tweaks/changes. Check him out here: www.planetminecraft.com/project/cnbs-pocket-sized-potion-lab-not-actually-pocket-sized/

Additional Notes

Possibly coming Soon:
Youtube Video/Tutorial