1. Sequential Version: There are four plastic buttons in the room. When the players press one of them, it will be light up. And the button will be turned off while let go of hands. Press the buttons in correct sequence will release the lock. Otherwise, nothing will happen.
2. Simultaneous Version: When the players press all plastic buttons at the same time, the EM lock closes.
Please make remarks about the color of the buttons when you make an order. Thanks.
List: Plastic buttons, one controller and one 12V adapter
