Condition of Use:
1. The ambient air temperatures within the range of -30 degreeto +40 degree;
2. The altitude above sea level not exceeding 1, 000m; (If the altitude is higher than 1, 000, it needs adjust. )
3. Frequency of the A. C. Power supply not less than 48Hz and not exceeding 52Hz;
4. Earthquake intensity not exceeding 7 degrees;
5. Maximum wind speed not exceeding 35m/s.

Technical Standard:
The technical performance of the products is in confirmed to IEC291, 282.