The TAS EDU™ (Total Alert System Emergency Display Unit) sets a new bar for in-building emergency notification. Wall-mounted alerting devices utilize two-way voice and video communication, strobe lights and sounds to engage the attention of building occupants located in common areas, and publish alerts for personnel safety and security with details of the emergency. The TAS EDU™ provides notice for immediate attention and the TAS EDU™ devices are mounted in crucial locations throughout building facilities. Ethernet and numerous reliable wireless communication connections insure that the message is delivered.