PoE Extender Gigabit Ethernet 1-Port copper 10/100/1000 Base-Tx PoE-Ultra to 4-Ports copper Gigabit Ethernet 10/100/1000 Base-Tx IEEE802.3af / at (max 50W shared - up to 300m ). Autonomous or wall mounting. Working temperature: -40ºC to 75ºC. It does not need power supply.