1. Ambient temperature: upper limit + 40 ℃, lower limit - 10 ℃, and the average temperature measured within 24 hours shall not exceed 35 ℃;
2. Altitude: no more than 2000 meters above sea level;
3. Relative humidity: daily average value shall not exceed 95% and monthly average value shall not exceed 90%;
4. Perpendicularity: when the equipment is installed, the inclination with the vertical surface shall not exceed 5 °;
5. Surrounding environment: places without fire, explosion, serious pollution, chemical corrosion and severe vibration;
6. If it exceeds the normal use conditions, it can be solved through consultation with the manufacturer.