Temperature/humidity
Maintain temperature and humidity in the equipment room as described in "Technical specifications."
Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and metal corrosion.
Lasting low relative humidity can cause washer contraction and ESD and cause problems including loose mounting screws and circuit failure.
High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the switch.
For the temperature and humidity requirements of different switch models, see "Appendix A Chassis views and technical specifications."