The Netonix WISP Switch model WS-8-150-DC is designed specifically for the WISP industry with a rugged chassis and extended operating temperature range. It features a simple yet powerful user interface providing the software features WISPs need in a switch. Product Features: 8 Port Managed Passive POE Switch (6) 1Gbps POE Ports (2) SFP Ports Standard Features: 110/220 VAC 150 Watt Power Supply (8) Gbps POE ports Manufactured and Assembled in North America Standard Desktop / Wall mount Optional Din Rail kit Dimensions 206 mm x 165 mm x 44 mm Operating temperature -25 to 55°C Serial console port Overall current used is reported Powers Ubquiti airFIBER / Mimosa / SAF radios Monitor DC voltage and current into the switch from your batteries. Monitors the DC power supply temperature with auto and programmable thermal shutdown. Program the switch to shut down lower priority POE ports when batteries get low and to restore them when sufficient reserves return or when it detects charging has resumed from solar or wind. If power gets too low it can be configured to shut down all POE ports and idle your remote site until it detects solar or wind charging has resumed and sufficient reserves are generated. You can chose to run your batteries all the way down to 9V to keep the tower up or have it shut down in stages to preserve your energy. WARNING: These switches are not designed to operate on negative 48V site, using -48V DC will damage the switch as it does not have isolated input output power.