HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 331)

Environmental specifications
Environmental condition Recommended Allowed Storage/standby
Temperature (MFP and print
cartridge) 17° to 25°C (62.6° to 77°F) 15° to 30°C (59° to 86°F) -20° to 40°C (-4° to 104°F)
Relative humidity 30% to 70% relative humidity
(RH) 10% to 80% RH 10% to 90%
Altitude N/A 0 meters (0 feet) to 2600
meters (8530 feet) N/A
ENWW Environmental specifications 315