Brother FAX-2840 Basic User's Manual page 114

Model
Humidity Operating
Storage
ADF (automatic document feeder)
106
FAX-2840 FAX-2845
20 to 80% (without condensation)
10 to 90% (without condensation)
2
Up to 20 pages (80 g/m
Up to 30 pages (staggered)
Recommended Environment:
Temperature: 20°C - 30°C
Humidity: 50% - 70%
2
Paper: 80 g/m
FAX-2940
)