Brother DCP9040CN - Manual (Page 146)

138
Noise level Sound power
Operating (Copying): L
WA d = 6.9 Bell
Standby: L WA d = 4.4 Bell
Sound pressure
Operating (Copying): LpAm = 54.5 dBA
Standby:
LpAm = 30 dBA
Temperature Operating: 10 to 32.5 °C
Storage: 5 to 35 °C
Humidity Operating: 20 to 80% (without condensation)
Storage: 10 to 90% (without condensation)