New head stop control push button box with singal light XCD-66C

1. Operational temperation:-5°c - +40°c  the average value less than +35°c  in 24 hours
2. Altitude: less than 2000m
3. Atmosphere condition : when the maximum temperature is +40 °c ,the  Operational humidity is less than  50%,allow  higher  humidity  in cooler environments.
4.  Pollution degree:3 level
5. Installs Category: II
6. No significant Shaking,no impact vibration and no snow or rain
7. No explosive media,the Gas and dust can't corroding metal and damage the insulation