built-in power amplifier horn speaker 20W DC12V active waterproof active horn speaker security monitoring independent Intercom voice broadcast system (netw···

Active horn speaker 10WDC12V active waterproof active horn speaker security monitoring independent Intercom voice broadcast system (network camera, video record···

Active treble speaker 30W  Used for broadcasting programs in parks, squares, highways, safe cities, tunnels and other places; External audio signal in···

Built-in power amplifier loudspeaker 50W  The power supply is 12v dc, which is used for the unified power supply of the monitoring camera.Active horn ···

Active outdoor waterproof sound column 20w

Outdoor waterproof active horn speaker 30W