Procet 55V DC 30 Watt Gigabit 802.3af/at Power over Ethernet Supply. It provides 55Vdc, 0.55A power for remote PDs over 2-pairs. It supports both 10/100 Base-T and Gigabit device. It works for 30W PoE PDs, such as wireless APs, Network cameras, IP Phones and other high power Ethernet terminals. It fully complies to IEEE802.3at PoE standard and backward compatible with IEEE802.3af terminals. The PT-PSE101G-AT is designed for indoor use. It works with input voltage of 100-240Vac. It has detection chip inside, which will detect and classify PD before powering it. It will not apply power until a standard-compliant PD is detected. The effective distance is 100 meters over Cat5e/Cat6 cables.