... aging resistance , acid rain , salt spray resistance , low andhigh temperature resistance , anti- shock performance, and good ventilation, anti-rain ... .Use of the environment·Ambient temperature : -25 °C- +80°Cand mean temperature difference within 24 hours does ... 40°C- +90 temperature r °C ange without distortion Type designation Use for Machinery,Electron,Prepaid electric energy measuring cubicle