DSS1418 Active Directional Speaker SystemJuly 13, 2022DSS1418 is a directional active speaker system. As the ultrasonic wavelength is only a few millimeters, much smaller than that of the speaker, it can produce nearly linear narrow beam. Ultrasonic wave...view
DSP395T DSP395U IP Directional Flat Speaker SystemApril 9, 2025The IP Directional Flat Speaker System, based on ultrasonic directional propagation characteristics, utilizes advanced digital signal processing technology. It modulates sound signals into ultrasonic ...view
Invitation to China Public Security Expo in Shenzhen on 28-31 Oct.October 28, 2019Invitation to China Public Security Expo in Shenzhen on 28-31 Oct.DSPPA sincerely invites you to attend the 17th China Public Security Expo in Shenzhen Convention & Exhition Center on 28-31 Octobe...view
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