Extra 330ft(100m) PoE+ data transmission can be extended through a PoE repeater. And it supports 3 levels cascade, therefore, it can achieve PoE data transmission up to 1312ft with 3 PoE extender. Support standard PoE, Input Max 30W, Output Max 24W, Average 8W per port. PoE Voltage 44-57 Vdc. PoE pin: Input: 1/2 (+), 3/6 (-), 4/5(+), 7/8(-); Output: 1/2 (+), 3/6 (-)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. Widely Application: supports wall mount and din-rail mount, can be installed anywhere as needed. You can connect AP, IP camera, IP phone etc. This 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 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).