Ceiling speaker with power rating of 6 W (selectable to 3 and 1 W), 100 V line. 2.5" speaker. Frequency response of 120-20.000 Hz. Sensitivity 87 dB (1 W, 1 m and 1 kHz). Maximum sound pressure level 94 dB (6 W, 1 m and 1 kHz). Flush mounting, quick spring-type system. Dimensions 103 mm (Ø) x 80 mm (depth), ceiling mounting hole 95 mm Ø. ABS and metallic grille, white colour (RAL 9016).