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Long Range Acoustic Device (LRAD) - Police Equipment
Long Range Acoustic Device (LRAD) - Police Equipment
Supplier Info
[China Supplier]
Contact Person : Mr. Du Terry
Tel : 86-0755-83289123
Fax : 86-0755-83299016
Product Detail
police equipment, military equipment, public safety device, security applications, waterside force

Long Range Acoustic Device - QS II

Long Range Acoustic Device (LRAD) QS II is a breakthrough hailing and warning, directed acoustic device designed to communicate with authority and exceptionally high intelligibility.

What makes the LRAD product unique is its ability to transmit your message with exceptional voice intelligibility and tonal clarity in a highly directional beam, even with significant ambient noise. The directionality of the LRAD device reduces the risk of exposing nearby personnel or peripheral bystanders to harmful audio levels.


*Bird control for airports, airfields, landfills, mines & wind farms.

*Waterside force protection

*Crowd & Riot control

*Building clearing operations

*Psychological operations

*Visit board search & Seizure

*Remote-operation infrastructure force protection

*Ground/mechanized offense/defense operations.

Principle of Operate:

Long Range Acoustic Device work principle like Antenna array, arrange multi acoustic unit which can generate high power acoustic on a round flat panel, it make up a surface acoustic base array, and use the acoustic supraposition principle to focusing and direct the voice . the Acoustic unit use electroacoustical transducer, and the character is big power ,convert efficiency high, small dimension, and with small heat emitting . signal source and amplify circuit control the phase coherent emitter, and based on the supraposition principle, the large acreage transducer array generate narrow acoustic beam, so that the acoustic power source directed emitting .

Product Specification:

Highly directional communication at 1000/2000/4000 meter

Carry and install easy , Can quickly install in everywhere

Support Microphone , MP3 etc multi audio input method, and can broadcast various kinds lifelike voice .

One operator is enough and the back of product is safety area

Suitable for all weather .

Standard Specification




Round Panel




220V AC, 50 HZ


<= 4A

Max power


Rate Power



150dB @1m

Main Frequency

3.6k HZ

Extend audio input




-3dB Beam width

15 degree +/- 5 degree

Beam shape

Symmetry cone


<10% @134dB(rms)


Acoustic base array ,Signal Source, Amplifier, Controller, Power Supply





* LRAD, Bird Repeller, bird control, wildlife control, riot control, acoustic device, airport equipment, police equipment, military equipment, public safety device, security applications, waterside force


Long Range Acoustic Device (LRAD) - Police Equipment

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