This kind of HDMI extender by CAT -6/6E uses single piece CAT 6 cable to extend the HDTV display upto 30 meters for 1080P. It breaks the limitation of the HDMI cable transmission length and offers more flexibility and convenience in cable construction. Comes as a pair fully functional module with no need for setting. it is compact in size and HDCP compliant. Has a HDMI interface and RJ45 interface.HDMI to RJ45 extender transmission FAR DISTANCE,it can be up to 30 meters for 1080p using CAT-6 Cable. The transmission distance limited by using traditional HDMI cable, add this device can be up to 30 meters and promise the high image quality. NOTE If you use CAT 5e cable, doesn't support distance reach to 30 meters.HDMI repeater is compact size (included TX Adapter and RX Adapter) Follow the standard of IEEE-568B. PLEASE KINDLY NOTE THAT the Transmitter and Receiver are connected is extremely important, it wouldn’t work if it’s connected incorrectlyNo Power Supply Needed, Support CAT-5e/6 cable can substitute HDMI cable to achieve long distance transmission. Follow the standard of IEEE-568B.Doesn't support connect any adapter/hDMI CABLE to our HDMI extender except one RJ45 CAT5E/CAT6/ Ethernet cable.Support 3D 1080P HDMI1.4 resolution, 4k*2k . One pair as a full functional module, no need of setting.Not Support HDCP. Support resolution: 480i/p, 576i/p, 720p, 1080i/p, 1920x1200,4k*2k