The LT-PMS-54 Surface delivers verbal commands or tones at extremely long distances with perfect intelligibility. It has 54 MAD1 Planar Magnetic Transducers loaded with 500Hz Waveguides for increasd output and control of the midrange. The effective use of the LT-PMS-54-WG500 is up to 40,000 ft (80dB @ 3KHz - subject to environment and atmospheric conditions). It is a totally self-contained mobile unit. It can be used on ships, checkpoints, entrances to facilities, natural disasters, etc. This powerful tool sends tones and verbal commands at a great distance enabling the operator to determine intent at a safe distance from the target. Versions with Dipole or Cardioid dispersion patterns available. This system is plug and play ready, requires no major assembly or integration prior to evaluation, and is currently commercially available.