<p>Driverless horns completely built in aluminium,&nbsp;round shape, grey painted, rugged, light, rain and UV rays resistant. Supplied with mounting bracket. This horn&nbsp;is ideal for outdoor operations like stadiums, sports hall, parking, motor-vehicle on board advertising and all applications where speech intelligibility is important. This&nbsp;horns has been designed to be used in conjunction with drivers adopting W-18N 3/8' plugs. Suggested driver: PROEL HD60T.</p>