The Haunted Drum creates a startling effect using an air tank mounted to the barrel. When you walk by you are startled by a loud, violent banging, as fog blows out of the top of the barrel through a crate. Includes fog machine with timer, light and switch. Operated by included switch, motion sensor, pressure pad or timer box. Requires 100-125 psi air compressor and AC power. $50.00 crating fee.