For hardware, the switches adopt dual power, fanless, wide temperature and voltage design, and has passed rigorous industrial standard tests, which can suit for the industrial scene environment. ^^ It can be widely used in smart city, rail transit, security surveilance, new energy, and other industrial fields. ^^ PUSR industrial switches adopts aluminum housing which can realize effective cooling without fan, and operate more quietly. ^^ WIth DIN rail mounting design, it can be installed on the DIN-rail, which is simple and convenient. ^^ A wide operating temperature range of -40 ~ +85 C (-40 ~167 F) allows for installations in harsh environments with extreme hot or cold conditions.