Acoustic Hailing Device

Acoustic Hailing Device

The AA76825 Acoustic Hailing Device, also known as Long Range Acoustic Device LRAD, is the loudest acoustic hailing device in production (world’s first +160 dB directed voice projection system), and is the ideal sound solution for communicating extremely long distances and penetrating high background noise environments (such as airplanes, helicopters, sirens, vehicles, and boisterous crowds) to ensure unmistakable commands.
With an acoustic footprint in excess of 2000 meters and a narrow acoustic beam of +/-5°, clear, intelligible messages and authoritative commands are broadcast to intended targets. Determining intent and influencing behavior, the AA76825 Acoustic Hailing Device can produce a warning tone of 135 dB at 100 meters. A powerful built-in warning tone projects an attention-getting, high frequency warning which enhances military and security personnel’s response. Piercing alert tones are heard loudly and clearly. This non-lethal deterrent tone is highly irritating. It can be compared to a water cannon, but with sound.
Using breakthrough technology, the AA76825 Acoustic Hailing Device can accurately reproduce sound with less than 1% distortion across the entire wide frequency range. With a STI rating of 0.91 out of 1.0, this device produces clear and authoritative voice output at range. Equipped with pan and tilt capability, the AA76825 Acoustic Hailing Device is the clear choice for large scale ships and platforms with the longest range requirements.

  • Military Security
  • Maritime and Port Security
  • Perimeter Protection
  • Oil and Gas Platforms
  • Large Area Security
  • Commercial Shipping

  • Hostage Negotiations
  • Crowd Control
  • Crisis Management
  • Search and Rescue
  • Issuing Felony Warrants
  • Serving Warrants to Methamphetamine Labs
  • Lost Child
  • Mass Evacuation
  • Mass Notification (e.g. sports events, natural disasters)
  • Traffic Stops
  • Incident Perimeter (chemical, biological, radiological, and nuclear)
  • Humanitarian Relief
  • Maritime Interdiction Operations
  • Fire Rescue

  • Shipboard protection from pirates and terrorists (private yachts, cruise lines, commercial vessels, Navy ships)
  • Perimeter/infrastructure protection for oil and gas platforms, mining operations, and chemical/nuclear/power plants
  • Perimeter security for private properties of wealthy individuals
  • Crowd control for public safety agencies (police, SWAT teams, etc).
  • Counter sniper mission support (use the warning tone to drive suspects from buildings)
  • Airborne warning and notification from helicopters to people on the ground
  • Long range communication for public safety agencies (police, SWAT teams, etc).
  • Commercial/government/military site security
  • Port security
  • Search and rescue for harbor/port police
  • Coastal surveillance for harbor/port police
  • Enforcement of exclusion zones by the military
  • Critical infrastructure protection by the military
  • Military and police psychological operations
  • Military traffic and access control points
  • Military interdiction operations
  • Military checkpoint operations
  • Military detainee operations
  • Border security
  • Disaster areas – effective for vocal communication at great distances
  • Transmitting bird distress calls to repel targeted birds from crops, buildings, airports, and wind farms
The technology behind the Acoustic Hailing Device (Long Range Acoustic Device LRAD) was developed to support the protection and exclusion zones around U.S. Navy warships following the October 12, 2000 small-boat terrorist attack on the USS Cole off the coast of Yemen killing 17 sailors and causing $240 million in structural damage to the $1 billion ship. Acoustic Hailing Devices are currently used around the world on sea (military, private and commercial vessels), on ground (tanks, armored vehicles, military/police vehicles, structures), and in the air (helicopters).

  • U.S. Navy
  • U.S. Army
  • Police Departments Worldwide
  • SWAT Teams
  • Cruise Lines
  • Private Companies
  • Universities
  • National Guard

  • Soft Cover, model AA76825-SC
  • Maritime Cover, model AA76825-MC
  • Record/Play Microphone, model AA76900
  • HyperCart, model AA76901
  • MP3 Kit with Waterproof Case and Cable, model AA76902
  • HS – File Player, model AA76903
  • Tripod: Light Duty, model AA76904
  • Tripod: Heavy Duty, model AA76905
  • Trailer Hitch Mount, model AA76906
  • Swing Arm Mount, model AA76907
  • Ship Rail Clamp (Aluminum), model AA76908
  • Ship Rail Clamp (Stainless Steel), model AA76909
  • Interconnect Cable Assembly – Playback Device, model AA76910
  • Microphone CB Style with Cable and Connector, model AA76911
  • 3 Meter Replacement AC Power Cord, model AA76912
  • 6 Meter Replacement AC Power Cord, model AA76913
  • Searchlight and Installation Kit, model AA76914
  • Remote Operations Controller, model AA76915
  • BlueColt T3000 Flashlight, model AA76916
  • Picatinny Mount for the BlueColt T3000 Flashlight, model AA76917


  • World’s first +160 dB directed voice projection system
  • Long range: over 2000 meters
  • Narrow acoustic beam: +/-5°
  • Wide frequency range: 225 Hz – 12 kHz, optimized for human voice
  • STI 0.91 out of 1.0
  • Pan and tilt capability

    Any questions? Write us!