Vlan & Extend Mode, set by dial switch. Ports 1-8 are isolated from each other at VLAN mode, providing network security and reducing port interference. Increase the transmission distance to 250m (10Mbps) at extend mode1 DC Power and 2 Industrial power (4 pin terminal), total of 3-way power supply is more flexible. Automatic fault switching, anti-reverse connection does not damage the equipment, higher reliability. ***Please note that the power adapter is not included***IP30 protection grade, working temperature -40~75°C(-40~185°F), super robustness, anti-lightning, anti-static and anti-overload protection, adapt to various harsh environmentsSupport auto-negotiation, plug and play, no configuration needed, low-power consumption CPU, no fan quiet operation, green energy saving, suitable for various networks, such as home office, computer room, warehouse, factory, compact control box and other industrial scenarios with ethernet access