This device is sure to shock. Electrical equipment with a beacon light is seen with the sound of crackling electricity. Throw the switch and the platform drops, rocks, and vibrates as a strobe fires. Includes strobe, cassette player, tape, and beacon. Requires AC power and 100-125 psi air compressor. Ask us about our optional timer for an additional charge. 8' long and 4' wide. PLEASE NOTE: This item is a Special Order and may take 4 t0 8 weeks for delivery. Call us for availability if you need this item sooner.