Sound projector for 100 V line, power of 20 W RMS selectable at 10, 5, and 2.5 W. Weatherproof ABS enclosure with IP66 protection degree. Includes a separate junction box with ceramic terminals and thermal fuse. Frequency response 150 ~ 21.000 Hz. Maximum sound pressure 100 dB (1 m/1 kHz). Metal U-bracket included. EN 54-24 certification. It also complies with the British safety regulations BS 5839, part 8.