Horn speaker, 100 W RMS, for 100 V line, with intermediate power sockets of 50 and 25 W, weather resistant. For voice alarm applications in areas with high ambient noise, both indoors and outdoors, especially road traffic tunnels. Built to withstand corrosive air pollutants, high levels of humidity and extreme temperatures, from -25º to +70º C. The speaker provides a very high sound pressure level of 133 dB, a balanced frequency response and very low distortion. Constructed of fireproof plastic (UL 94 V-0) in black, it has IP65 protection and is equipped with a ceramic block and a thermal fuse. Ceiling installation is with V4A stainless steel brackets and screws (1.4401 according to ISO 3506 / EN 10088-3; AISI 316), using the AET-100WH accessory composed of 4 individual mounting brackets or the AET-100PH accessory, of one single piece. Dimensions 1228 x 832 x 413 mm and weight 16 kg.