?Widely Used?Din-rail & Wall mount kit, easy to install, suitable for professional networks such as industrial control, computer room, warehouse, factory, compact control box. ?LED & Fanless?Both the power supply and the port have LED indicators, which can clearly observe the running status of the device. Fanless design, heat sink for heat dissipation, quieter and energy saving during operation. ?Industrial IP40?This is a industrial grade switch, using sturdy aluminum alloy cg and industrial grade electronic components, working temperature -40~75°C(-40~185°F), anti-lightning, anti-static and anti-overload protection. ?Redundant Power?Support 2-way industrial grade power interface input, automatically switchover when 1-way fails without any downtime, high reliability ensures continuous business operation. Include one commercial power supply. ?IEEE802.3af/at PoE?Port 1-4 support IEEE802.3af/at standard, max 30W per port, connect multiple poe devices, such as POE camera/ap, etc. Not support passive 24v poe. His POE input DC voltage is 48-55V, please use a input voltage above 48V to provide POE, if it is 12V, it cannot provide POE. ?5 Gigabit Ports?This din rail switch include 4 gigabit ethernet ports, 1 gigabit SFP port with 1310nm 20km LC transceiver, support longer distances over fiber.