Wireless receiving sound column 1D-80

Bihang BG-50

Transmitter TX-100

DC constant impedance amplifier LY-301KTB

IP Outdoor Waterproof Sound Column - Economy IP803

Lawn speaker TS6210

Active speaker XG-80

Power sequencer RS-18

IP Ceiling mounted Coaxial (4.5 inches)

Digital Wireless Device XG-602 (WK-80)