Advantiv Engineering completed the detailed engineering for this public address system at a processing plant located in the Bay Area CA. The acoustic devices provide long-range tone & voice mission critical actionable information during and after emergency events. The acoustic device selected have the capability to broadcast up to 2 miles distance with 360-degree coverage. The device is safely optimized to the primary human hearing range of 1-5 kHz to generate voice messages with exceptional clarity from close range out to 5,500 meters.