1.Ambient air temperature: -5¡æ~+40¡æ, the highest monthly mean temperature should not exceed +30¡æ; 2.Altitude for installing place should not exceed 1000m; 3.When the ambient air temperature is +40¡æ, the relative humidity should not exceed 50%, and it allows higher relative humidity under lower temperature. Max average humidity in the dampest month is 90%, meanwhile the lowest average temperature of this month is + 25¡æ, and condensation on the product surface caused by temperature change should be taken into consideration. |