Brother MFC 9970CDW - Manual (Page 199)

Specifications
191
D
Noise level
Sound power
1
Operating
(Colour Copying): L
WA
d = 6.70 B (A)
Operating
(Monochrome Copying): L WA d = 6.67 B (A)
Office equipment with L WA d > 6.30 B (A) is not suitable for use in
room where people do primarily intellectual work. Such equipment
should be placed in separate rooms because of the noise
emission.
Ready:
L WA d = 4.21 B (A)
Sound pressure
Operating (Printing):
L
PA
m = 57 dB (A)
Ready: L PA m = 33 dB (A)
1 Measured in accordance with ISO 9296.
Temperature Operating: 10 to 32.5 C
Storage: 0 to 40 C
Humidity Operating: 20 to 80% (without condensation)
Storage: 10 to 90% (without condensation)
ADF (automatic document
feeder)
Up to 50 pages (Staggered) [80 g/m
2
]