My Liberty already had an outlet in the safe. Just plugged it into the wall and then connected the dehumidifier. It heats up the inside of the safe very slightly to get rid of the humidity. Hot air rises therefore the recommendation to mount it as low as possible. Mine heats up enough that you can definitely tell it s on. Uncomfortable to the touch. Ordered mine from
deansafe.com[This message has been edited by letterman72 (edited 4/14/2013 6:38p).]
[This message has been edited by letterman72 (edited 4/14/2013 6:42p).]