Bosch LCE-06MW 6W Ceiling loudspeaker, Coverage angle HxV (-6 dB, 1 kHz) (°): 180 x 180 °, Coverage angle HxV (-6 dB, 4 kHz) (°) 65 x 65 °, Material: Metal, Mounting cutout (mm): 180 mm, Operating relative humidity, non-condensing (%): 95 %, Operating temperature (°C): -25 – 55 °C, Rated input voltage (V): 70 V; 100 V, Rated power (W): 6 W, Storage temperature (°C): -40 – 70 °C, Weight (kg): 0.74 kg.