LRAS150 150W Mass Notification SpeakerAugust 16, 2018LRAS150 is an active special acoustic hailing device. It adopts voice coil air cooling technology for fast cooling, with the high power over 500W. Compared with common acoustic devices, its maximum sound pressure level is 10dB higher, greatly enhancing the sound transmission distance.view
LRAS300 300W Active Special Acoustic Hailing DeviceAugust 2, 2022LARS300 is an active special acoustic hailing device. It adopts voice coil air cooling technology for fast cooling, with the high power over 300W. Compared with common acoustic devices, its maximum so...view
DSP1515NS IP Network Acoustic Hailing Device LoudspeakerJune 6, 2024The device supports the international standard SIP protocol and accepts broadcasts and calls from the LAN. It is made of high-quality PE plastic, which is durable and fully meets the requirements for ...view
The internationalization of Technical code for public address engineeringNovember 25, 2016It has been 4 years since the National Standard-Technical code for public address system engineering GB 50526 – 2010 was issued and implemented in 2010. This code is the first national standard in the field of public address (PA) in China, also the firstview
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