1.Altitude:Not exceeding 2000m at the installation location. 2.Ambient air temperature:-5âÂÂÂÂÂÂÂÂÂÂÂÂ~40â 3.Atmosphere condition:it should be installed in dry, dust-free, and non-corrosive environments where they will not be subjected to vibration or shocks. 4.weather condition:no rainstorm and no sonw 5.pollution grade:class3 6.installation type:â ¢