Hf - ies - 4000 series 24 - port 3 - layer core switches can support 16 / 12 gigabit ports + 4 / 8 2.5g ports + 4 mega ports. The product is modular in design,It can provide flexible port configuration, is easy to expand, meets the industrial level 4 EMC design requirements, and meets the IP40 protection level. Support rich software features and console, telnet and web management methods.Adopting industrial wide temperature range design, it can work normally at ambient temperature of - 40 ℃ ~ + 85 ℃ and relative humidity of 5 ~ 95 % ( without condensation ).It is dust - proof, salt fog - proof and acid fog - proof, and is suitable for industrial fields with harsh environment.