Museum Uses Focused Sound Propagate Ultrasonic Directional Straight Speaker
Shenzhen Golden Lisen Electronic Tech. Co., Ltd.0.1W Micro Headphone Raw Speaker
Changzhou Wujin Yueda Electroacoustic Equipment Co., Ltd.Museum and Exhibition Focused Beams Spotlight Sound Directional Speaker System
Shenzhen Golden Lisen Electronic Tech. Co., Ltd.Super Directional Ultrasound Loudspeaker with Transmitter Wall Mounted Spotlight for Museum Hospital
Shenzhen Golden Lisen Electronic Tech. Co., Ltd.Multi Message Sound Module, Audio Chip (S-3017)
Dongguan AST Industry Co., Ltd.Commercial Ultrasonic Directional Beam Sound Parametric Speaker for Museum
Shenzhen Golden Lisen Electronic Tech. Co., Ltd.Directional Ultrasonic Speaker with Focused Audio Technology Parametric Array for Museum
Shenzhen Golden Lisen Electronic Tech. Co., Ltd.