Bosch LCE-06CWE 6W Ceiling loudspeaker, EN54-24, Coverage angle HxV (-6 dB, 1 kHz) (°): 165 x 165 °, Coverage angle HxV (-6 dB, 4 kHz) (°) 80 x 80 °, Material: Plastic (ABS), Mounting cutout (mm): 180 mm, Operating relative humidity, non-condensing (%): 95 %, Operating temperature (°C): -25 – 55 °C, Sensitivity (1 W, 4 m, 100 Hz - 10 kHz) (dB): 90 dB, Sound pressure level (rated power, 4 m, 100 Hz - 10 kHz) (dB): 92 dB, Rated input voltage (V): 70 V; 100 V, Rated power (W): 6 W, Storage temperature (°C): -40 – 70 °C, Weight (kg): 0.77 kg.