This 4K, HDMI Extender Balun, by OREI, works exactly as advertised. I set up the 'send' and 'receive' pair using a 300-ft run of direct-burial, CAT-6 ethernet cable between them, and using a Blue-ray player as the signal source, and an HD video projector as the display... the type of scenario where an extender would be useful. At 300-ft, I was well-within the maximum length this extender pair is advertised to be capable of. And I was not disappointed. Audio and video looked, and sounded great, at the receiving/displaying end! There was no detectable latency - either in A/V sync, or from start of playback, to start of display. Colors were vibrant- not washed out, and the PoC (power over cable) feature worked perfectly... allowing for power only needing to be connected at one end (in my case, the sending unit). The bi-directional IR support worked fine, as well- allowing control of a device at one end, from the extender unit on the other side. It's worth noting that only one IR blaster, and one IR receiver are included... so while either IR control can be connected, on either side (making it technically, bi-directional), you can only go one way at a time- without reversing the IR control connections. Still, it's a nice feature. RS-232 control is also possible- but not tested, in my scenario. The sending unit has an HDMI loop-out, providing a local video monitor port. Very useful. The receiver features a 1/8-inch TRS audio break out... so the receiver also functions as an HDMI audio de-embedder- allowing you to connect stereo audio out, to a separate audio amplifier. Also, very useful. Though I would like to have seen the 'audio break-out' feature repeated on the sending unit. Of course, in the case of my Blue-ray player, an audio break-out already exists on the player. Meaning I actually already had an audio break-out, at my source. The extender units are powered by a single, 24-volt DC power adapter... So, field deployment means needing to have AC power- at one end- nearby, since the 24-volt requirement is an odd duck, in terms of portable power. The send and receive units are enclosed in metal boxes, providing professional-quality weight and feel. The devices support HDCP (copy protection) v2.2, which IS (as of the time of this write-up) the most CURRENT version. Very nice. ... It is worth noting however, that these extenders support the HDMI 2.0a standard... which is NOT the most current HDMI standard. For HDMI, that would be version 2.1 (again, as of the time of this write-up). The most notable difference between v2.0a and 2.1 is bandwith: v 2.0a affords 18Gbps, while 2.1 offers 48Gbps. Upon first glance, that looks like a radical disparity. But realistically, unless you're trying to push 8K video, the full-400ft- requiring CAT-8 cable, you'd never need (or get) the full 48Gbps bandwidth, anyway. True, the greater the bandwidth, the greater the depth of color capability... but again, unless your playback media/device is 8K, and your display/receiver is 8K, 18Gbps is more than enough. It was certainly enough for the 4K-capable HD resolution projector I was testing with. Overall, this is a great 'HDMI over ethernet' extender system.

In an attempt to get control of the miles and miles of wires that is strung across my living room as a result of moving things around when our LED TV went out and we decided to use a projection system, my fiancé thought these would be a good route to go.

In truth, they've helped out a lot. We have a couple of gaming consoles that are now hooked to these and we have shortened our runs of wire a little bit. We still have other components to contend with, when it comes time to get them taken care of, we will probably get another set of these, but...

If you do not know what you are doing, hooking these up to your system can be a nightmare and you will be contacting tech support, which we did. Luckily, my fiancé figured things out before they got back in touch with us (we contacted them via email), so we had our system back up and running as soon as he realized what he needed to do.

Tech support will help you out, if you need it and I would highly advise reading the instructions thoroughly before you attempt to hook things up. Since my fiancé had no clue going into this, his patience wore out quick. Make sure before you get these, you know what you're doing.

These worked like a charm. Highly recommended.

I have an unorthodox living room setup, with a projector and a TV. We have the projector on the bottom shelf of our coffee table/ottoman. I was using HDMI wifi to send a signal from my receiver in the front of the room to the projector, but I was getting some shaky video between scenes. Also, the wifi devices I have seen ( and the one I own) for HDMI are 1080p, so my AppleTV had to switch from 4K to 1080p to play on the projector.

This device required me to run Ethernet through the attic and down a wall in the back of the room, but it was very easy to setup after that. I plugged in the transmitted to power, HDMI and Ethernet and plugged the receiver into the Ethernet and ran HDMI to the projector. That's it! No waiting for the two devices to sync, just great looking 4K video. I have watched a couple movies and not one hiccup. Great device for anyone with a similar need!

I like to keep the TV areas of the house free of electronic clutter with the players down in a utility closet, so I'm not new to HDMI extenders. I've used a few ranging from cheap to very expensive name brands, and out of all of them, this one is the best I've used.

Design-wise, some things that I like: you can power it from either end, and it only needs one power input. That means I can keep the wall wart down in the closet with the rest of the equipment, and the area by the TV is cleaner yet. It has an IR blaster in the box. I don't use them, but it's really nice to have as an option if you have an older piece of gear that you need to get a remote signal to. Perhaps my favorite thing, the sender has an HDMI out, so I can put a small monitor in the rack and see the same output that's going to the TV, it makes it extra nice when setting things up. The cases themselves are sturdy metal and well vented. It comes with leafs you can attach to the sides to loop thru zip ties if you want to tie them down to something like a rack shelf.

The best thing though is how well it's engineered from a video / durability perspective. The signal is STABLE. I've had extenders, even name brand ones, drop signal on on a nice CAT6 cable just because the cable moved. I cannot make this extender drop a signal no matter how much moving, bending, coiling of the cable that I do. It's very quick to establish a connection too, within a second or two, compared to the 6 or 7 seconds I've seen in some of them. It seems that there's a very solid video processor under the hood of this thing, because it does a lot, and never seems to lag or struggle to keep up with anything.

It seems to support all the HDMI special protocols like CEC so power on the player can turn the TV on, menu buttons work from the TV back to the player. It will even send audio back from the TV to the sender using HDMI's audio return, solving an issue I had in one room with a video game system that needed to route audio back down to the equipment closet. And best of all, all of this stuff just works. No weird configurations, no setting EDIDs on one box with a paper clip, no swapping the boxes back and forth to get them setup, this thing just works, and works well. It's not the most inexpensively priced splitter, but it is a POWERHOUSE, this thing is a top notch device, and will save you a ton of time and headache.