Hidden Switches allow you to hide a redstone lever or button behind a wall. On right click of the associated block, the lever or button will toggle.
Hidden switches consist of three parts:
# A block to put the sign on. # Either a sign post or a wall sign with [X] as the second line. # A lever or button one block away from the sign in any right angle direction.
Right clicking a block next to the sign will toggle the switch(es) or button(s) adjacent to the sign.
In order to lock Hidden Switches with keys, write an item on the 3rd line of the sign. If the user does not hold this item, they will read that their key did not fit.
Hidden switches can be restricted by entering a group name in the third line of the sign (case-sensitive). Users not in the listed group get an error message.