Indoor use of the requirements of the PTZ is not high, the use of the environment of the indicators are mainly for outdoor use PTZ. Including the use of ambient temperature limits, humidity limits, dust and water protection IP protection level. General outdoor environment using the PTZ temperature range of -20 ℃ to +60 ℃, if used in a lower temperature environment, you can install the temperature inside the PTZ heater to the temperature limit of -40 ℃ or lower The Humidity index is generally 95% non-condensing. Dustproof and waterproof IP rating should be above IP66. IP protection level reflects the level of sealing equipment, mainly refers to the dust and liquid intrusion, it is an international standard, in line with the 1997 BS5490 standard and 1976 IECS529 standard. The first value after IP indicates the degree of protection against the solid, the second indicates the degree of protection against the liquid, and the third indicates the resistance to mechanical shock. In addition, in actual use should be based on the choice of the environment to use appropriate materials and protective layer, such as iron shell is not suitable for use in humid and corrosive environment.