Working Condition and Installation Condition
1 Temperature : -5℃~+40℃, the average temperature should lower than +35℃ within 24 hours;
2 Height above sea level: lower than 2000m;
3 Atmosphere condition: At the highest temperature of +40℃, relative humidity not above than 50%. At the lower temperature relative humidity is permitted;
4 Pollution grade: 3;
5 Installation type: Ⅱ;
6 Hole dimension of installation: plateΦ22. 3mm;
7 Install in the safe medium, which cannot rot metal and insulator
8 Avoidance of notable shake, wallop and thunder storm.

9. mushroom head: 60mm