| Specification | Description | 
| Ambient temperature | The temperature range is measured at sea level altitude. ASHRAE class A2: 10°C to 35°C (50°F to 95°F) The maximum ambient temperature decreases by 1°C for every 300 m (984 ft) increase in altitude above 900 m (2,953 ft)ASHRAE class A3: 5°C to 40°C (41°F to 104°F) The maximum ambient temperature decreases by 1°C for every 175 m (574 ft) increase in altitude above 900 m (2,953 ft)ASHRAE class A4: 5°C to 45°C (41°F to 113°F) The maximum ambient temperature decreases by 1°C for every 125 m (410 ft) increase in altitude above 900 m (2,953 ft)
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| Relative humidity (non-condensing) | ASHRAE class A2: 20%–80%; maximum dew point: 21°C (70°F)ASHRAE class A3: 8%–85%; maximum dew point: 24°C (75°F)ASHRAE class A4: 8%–90%; maximum dew point: 24°C (75°F)
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| Maximum altitude | 3050 m (10 000 ft) |