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The world's largest siren appeared in Beijing in 2019

Publish Time: Visit: 1397

On May 6, 2019, the Beijing International Military and Civilian Equipment Exhibition was opened. The various military and civilian equipment products included in the exhibition covered sea, land and air, unmanned systems, accusation systems, network security, photoelectric and infrared systems, and logistics equipment.  new materials and many other fields.

The most striking of these is a giant siren of 3 meters in length and 2 meters in width and height. The giant siren is called "Defender" and is currently the world's largest air defense siren.

With an output of 260 hp and a sound range of up to 10 km, this siren can cover an area of ​​200 square kilometers with a start-up time of less than 3 seconds. It is mainly used to perform police warnings and alarms in important places such as blasting, reservoirs, power stations, airports, military bases, etc. and can also serve as an early warning for natural disasters such as tsunami, floods, fires, and typhoons.

The warning signs on both sides of the alarm are labeled "Caution Noise" and warn that unprotected personnel need to stay outside the 30 meter range to see how loud the alarm will work. The air defense alarm is a mobile vehicle-mounted alarm. When the current working state, the huge horn can rotate 360 ​​degrees around the axis to achieve the purpose of simultaneously sending alarms in all directions.

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