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Normal service conditions

Altitude: ≤ 1000m;

Ambient air temperature:  

Maximum air temperature: +40℃, 

Minimum air temperature: -15℃;

Alpine region：-40℃

Pressure does not exceed 100Pa

Earthquake grade less than Degree 8

Humidity:

Daily average value of relative humidity: ≤95%

Monthly average value of relative humidity: ≤90%

The ambient air is not significantly polluted by dust, smoke, corrosive and/or flammable gases, vapours or salt.