12 | About Your MonitorEnvironmental CharacteristicsTemperatureOperating 0°C to 40°C (32°F to 104°F)Non-operating –20°C to 60°C (–4°F to 140°F)HumidityOperating 10% to 80% (non-condensing)Non-operating 5% to 90% (non-condensing)AltitudeOperating 5,000 m (16,404 ft) (maximum)Non-operating 12,192 m (40,000 ft) (maximum)Thermal dissipation 153.6 BTU/hour (maximum)88.7 BTU/hour (typical)