1. Ambient temperature: not higher than +40 ºC, not less than -15 ºC (at -30 ºC to allow storage and transportation). 2. Altitude: not exceed 1000m. 3. Earthquake intensity: not more than 8 degree. 4. Wind pressure:≤700pa 5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration