Master Blaster Incorporates an industrial release valve activated by a pressure pad. Also, A/C outlets are energized by the pad, so in addition to the scare created by the bang of rushing air, you can add your own strobe light or other electrical device to heighten the scare. Master Blaster pay's for itself in one month's operation, since no employee is required to implement the scare. Master Blaster never misses a beat, no timing problems, no breaks just one scare after another! Requires 100 psi air compressor and A/C power. Must be mounted to the floor due to blast of air. Mount inside wall to prevent tripping.