Bosch BCS-HS10E Horn Speaker. Round horn, grey colour, 10W with taps at 10, 7.5, 5, 2.5, 1.25W, durable plastic flare, metal U-bracket, 300Hz-13kHz frequency response, includes capacitor for evac applications. IP66 rated. 200 diameter x 230mm deep. High-efficiency horn loudspeakers provide excellent speech reproduction and sound distribution for a wide scope of paging and emergency evacuation applications.