Brother MFC-9970CDW User Manual page 211

Noise level
Temperature
Humidity
ADF (automatic document
feeder)
174
Sound power
Operating
(Colour Printing):
Operating
(Monochrome Printing):
Ready:
Sound pressure
Operating (Printing):
Ready:
50 °F to 90.5 °F (10 to 32.5 °C)
Operating:
Storage: 32 °F to 104 °F (0 to 40 °C)
Operating: 20 to 80% (without condensation)
Storage: 10 to 90% (without condensation)
Up to 50 pages (Staggered) 20 lb (80 g/m
L d = 6.94 B (A)
WA
L d = 6.88 B (A)
WA
L d = 4.8 B (A)
WA
L m = 57 dB (A)
PA
L m = 33 dB (A)
PA
2
)