?Widely Application?Compact size (3.2"*2"*1"), supports wall mount and din-rail mount, can be installed anywhere as needed. You can connect AP, IP camera, IP phone etc.. ?Unmanaged PoE Repeater?No setup is required, no power, just need a network cable to expand PoE network, plug and play. Supports automatic detection of devices and powers compliant standard PDs. ?Extend PoE+ Data Up To 1,312FT?Extra 330ft(100m) PoE+ data transmission can be extended through a YuanLey PoE repeater. And it supports 3 levels cascade, therefore, it can achieve PoE data transmission up to 1312ft with 3 PoE extender. ?IEEE802.3af and IEEE802.3at?This 3 channel PoE extender works with all standard IEEE802.3af/at POE switches, POE injectors and POE NVRs. PoE voltage is 44-57V. The Max input is 30W, and the Max output is 24W. Each port can power standard PoE devices less than 8W like IP phones, IP security, IP speakers, etc. ?4 Channel PoE Extender?This 4 port PoE extender include 3 PoE out and 1 PoE in. It can provides PoE power to up to three PoE devices, 10/100Mbps speed. Each PoE extender has an transmission distance of 330ft(100m).