Acoustic projector with power rating of 20 W (selectable by switch to 10 and 5 W) in 100 V line. Connection of low impedance 4 ohms. Bidirectonal, with 2 x 5" bicone speaker. Frequency response of 120-20,000 Hz. Sensitivity 86 dB (1 W, 1 m and 1 kHz). Maximum sound pressure level 99 dB (20 W, 1 m and 1 kHz). Narrow cylindrical enclosure. Finishing in white ABS (RAL9016) with aluminum grille and steel bracket. Suitable for outdoor (IP-66).