Monoprice Blackbird 4K HDMI Extender, 50m - 4K HDMI Extension to 164 feet
Product # 24281
$86.69
$101.99
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ETA: 2/10/2021
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Questions and Answers
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Browse 37 questions
Browse 37 questions
and 31 answers
do I have to restart the transmitter daily morning ? i am using a different brand and that transmitter need to be restarted daily morning as it goes to sleep mode
Arvind L
on Dec 25, 2017
BEST ANSWER: We use it in a commercial studio and once we set it up we have not had to touch it since. The source goes on and off as well as the display with no issues. It is being fed by 1x8 hdmi splitter amp that provides a consistent resolution so that may have something to do with it. It has been the best solution we have used so far and we have tried many. Cat6 wiring is a must.
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- Geoffrey R on Dec 25, 2017
BEST ANSWER: We use it in a commercial studio and once we set it up we have not had to touch it since. The source goes on and off as well as the display with no issues. It is being fed by 1x8 hdmi splitter amp that provides a consistent resolution so that may have something to do with it. It has been the best solution we have used so far and we have tried many. Cat6 wiring is a must.
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- Inaccurate
- Geoffrey R on Dec 25, 2017
I have mine plugged in continuously and haven't had to do anything to them since installed. No power cycling or disconnecting and reconnecting of the HDMI cables.
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- Cody V on Dec 25, 2017
- Purchased on Nov 23, 2017
From my experience, no this does not need to be restarted. It should work all the time
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- Robbie M on Dec 25, 2017
- Purchased on Nov 30, 2017
Good day. No you do not have to restart the transmitter daily.
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- Inaccurate
- Henry L on Dec 25, 2017
No. It's always on in my experience. Works great.
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- David S on Dec 25, 2017
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I tried to use this device with a MacBook Pro with Thunderbolt 3/USB-C to HDMI adapter (the one Apple makes), and get a scrambled screen. It works great with a laptop that has a built in HDMI port. Any idea why it does not work with the adapter? Thank you.
New User U
on Mar 4, 2020
BEST ANSWER: Thank you for your question.
Our extenders are not made to be connected to adapters or converters so we cant guarantee they will work unless you go straight from the source to the display.
Our extenders are not made to be connected to adapters or converters so we cant guarantee they will work unless you go straight from the source to the display.
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- Inaccurate
- Tyler C Staff on Mar 4, 2020
Thank you, Tyler. Do you know of an extender that will work with this type of adapter?
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- New User U on Mar 4, 2020
BEST ANSWER: Thank you for your question.
Our extenders are not made to be connected to adapters or converters so we cant guarantee they will work unless you go straight from the source to the display.
Our extenders are not made to be connected to adapters or converters so we cant guarantee they will work unless you go straight from the source to the display.
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- Inaccurate
- Tyler C Staff on Mar 4, 2020
Thank you, Tyler. Do you know of an extender that will work with this type of adapter?
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- New User U on Mar 4, 2020
Probably not the right version of HDCP compliance. If you need 2.2 like for the new Apple TV it’s most likely your issue.
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- James N on Mar 4, 2020
- Purchased on Nov 4, 2018
To continue from before. You probably need the “pro” version.
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- James N on Mar 4, 2020
- Purchased on Nov 4, 2018
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Is there anyway I can add more IR Blasters so I can control more than one source unit?
Todd K
on Dec 1, 2018
BEST ANSWER: Yes. You can wire up to 4 flashers in series to achieve this.
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- Lou on Dec 1, 2018
- Purchased on May 6, 2018
BEST ANSWER: Yes. You can wire up to 4 flashers in series to achieve this.
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- Lou on Dec 1, 2018
- Purchased on May 6, 2018
How would you wire these?
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- Todd K on May 4, 2019
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What IR Blaster Part Number is used on these?
Todd K
on May 4, 2019
BEST ANSWER: Thank you for your question.
This item would come with two IR receivers and two IR blasters.
This item would come with two IR receivers and two IR blasters.
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- Tyler C Staff on Sep 12, 2019
BEST ANSWER: Thank you for your question.
This item would come with two IR receivers and two IR blasters.
This item would come with two IR receivers and two IR blasters.
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- Tyler C Staff on Sep 12, 2019
Mine only came with one blaster and one transmitter (also only 1 AC adapter even though the manual said 2 should be included
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- Seth F on Jul 5, 2020
- Purchased on Apr 6, 2020
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Can I use a display port adapter to HDMI with this product?
A shopper
on Jan 3, 2020
BEST ANSWER: I do t see why you couldn’t... as long as the signal is converted to HDMI first on the front end.
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- M U on Jan 5, 2020
- Purchased on Jun 29, 2019
BEST ANSWER: I do t see why you couldn’t... as long as the signal is converted to HDMI first on the front end.
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- M U on Jan 5, 2020
- Purchased on Jun 29, 2019
Yes, this is what I am doing.
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- Guillaume V on Jan 3, 2020
- Purchased on Jan 13, 2019
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When would it make sense to buy this model versus Product # 21609?
New User U
on Nov 30, 2017

Monoprice Blackbird 4K HDMI Extender, 50m - 4K HDMI Extension to 164 feet

Monoprice Blackbird 4K Pro HDBaseT Extender Kit, IR, 70m with PoC, RS-232, HDCP 2.2
BEST ANSWER: The pro model has an extra 20m of range and also supports rs-232 transmission over the same cable. If you do not need those two options then the base model would be fine.
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- Cody V on Dec 25, 2017
- Purchased on Nov 23, 2017
BEST ANSWER: The pro model has an extra 20m of range and also supports rs-232 transmission over the same cable. If you do not need those two options then the base model would be fine.
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- Cody V on Dec 25, 2017
- Purchased on Nov 23, 2017
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WHy would this be built to support 30hz when most signals will be 60hz? Does this make sense to anyone?
A shopper
on Nov 19, 2018
BEST ANSWER: Thank you for your question.
This item is only HDMI 1.4 which is why it only supports 4k @ 30 Hz.
It would still support 4k @ 30 Hz.
This item is only HDMI 1.4 which is why it only supports 4k @ 30 Hz.
It would still support 4k @ 30 Hz.
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- Inaccurate
- Tyler C Staff on Aug 8, 2019
BEST ANSWER: Thank you for your question.
This item is only HDMI 1.4 which is why it only supports 4k @ 30 Hz.
It would still support 4k @ 30 Hz.
This item is only HDMI 1.4 which is why it only supports 4k @ 30 Hz.
It would still support 4k @ 30 Hz.
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- Tyler C Staff on Aug 8, 2019
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From a previous answer from someone they said more than one IR Blaster could be used with this unit.... would anyone know what Part Number the IR Blaster is that is included with the unit so I could purchase more of them? Thank you
Todd K
on Dec 4, 2018
BEST ANSWER: Thank you for your question.
You would want to use #27220
You would want to use #27220
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- Tyler C Staff on May 24, 2019

Monoprice Blackbird IR Blaster for PID 21609 Blackbird 4K HDBaseT Kit
BEST ANSWER: Thank you for your question.
You would want to use #27220
You would want to use #27220
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- Inaccurate
- Tyler C Staff on May 24, 2019

Monoprice Blackbird IR Blaster for PID 21609 Blackbird 4K HDBaseT Kit
Vote for the best answer above!
Is the DC barrel connector “locking”?
A shopper
on Dec 10, 2018
BEST ANSWER: Thank you for your question.
The power barrel can be screwed into the boxes to lock them into place.
The power barrel can be screwed into the boxes to lock them into place.
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- Tyler C Staff on Aug 9, 2019
BEST ANSWER: Thank you for your question.
The power barrel can be screwed into the boxes to lock them into place.
The power barrel can be screwed into the boxes to lock them into place.
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- Tyler C Staff on Aug 9, 2019
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Does this device support ARC?
A shopper
on Apr 1, 2019
BEST ANSWER: Thank you for your question.
This would not support ARC.
This would not support ARC.
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- Tyler C Staff on Sep 3, 2019
BEST ANSWER: Thank you for your question.
This would not support ARC.
This would not support ARC.
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- Tyler C Staff on Sep 3, 2019
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Do you need a power supply with both the transmitter and receiver? Mine only came with one
Jay W
on Apr 10, 2019
BEST ANSWER: Thank you for your question.
This item has would pass power over the Ethernet.
This item has would pass power over the Ethernet.
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- Inaccurate
- Tyler C Staff on Sep 6, 2019
BEST ANSWER: Thank you for your question.
This item has would pass power over the Ethernet.
This item has would pass power over the Ethernet.
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- Tyler C Staff on Sep 6, 2019
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Can I run this through cat6 patch panel ?
A shopper
on Dec 3, 2019
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Does this support audio as well as I’m looking to run from my projector to another tv in ?another room and the one I’m using now doesn’t give any sound from it
A shopper
on Jan 22, 2020
BEST ANSWER: Thank you for your question.
Since HDMI would pass audio this would also pass audio but it would not support ARC functionality.
Since HDMI would pass audio this would also pass audio but it would not support ARC functionality.
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- Tyler C Staff on Jan 24, 2020
BEST ANSWER: Thank you for your question.
Since HDMI would pass audio this would also pass audio but it would not support ARC functionality.
Since HDMI would pass audio this would also pass audio but it would not support ARC functionality.
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- Tyler C Staff on Jan 24, 2020
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Can i use a switch or two set of this to extend distance?
A shopper
on Jun 9, 2020
BEST ANSWER: Yes but only use the switch for video, do not use it for any other data. I would limit to one switch if possible. I have go up to 500ft with these.
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- Mike M on Jun 9, 2020
- Purchased on Jan 3, 2020
BEST ANSWER: Yes but only use the switch for video, do not use it for any other data. I would limit to one switch if possible. I have go up to 500ft with these.
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- Mike M on Jun 9, 2020
- Purchased on Jan 3, 2020
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got one of these and it works fine, except it doesn't support cec. as such my xbox can't power on/off my TV anymore over the hdmi. did I mess something up?
Christopher U
on Nov 9, 2018
What is the Part Number for the IR Blaster that is used with the unit?
Todd K
on Dec 2, 2018
What is the replacement IR Blaster part number for this unit?
Todd K
on Dec 8, 2018
Do you sell replacement AC adapters for these? Model is CD1210 (COMINGDATA) (Input 100-240V ~ 50/60Hz 0.5A / Output: +12V / 1A Polarity is negative over positive.
Dmitry N
on Dec 13, 2018
I ordered this and 100 ft of Ethernet cable, but I fear it may be just short. Will I be able to add an extender adapter so I can add another Ethernet cable without loss of quality?
A shopper
on Oct 21, 2019
Can someone tell me the specifications of the dc barrel plug?
Shane C
on Dec 18, 2019
Do the transmitter and receiver have to have a single line between them connected directly, or can they both just be plugged into a home Ethernet network through switches or hubs?
A shopper
on May 29, 2020
Mine only came with one(1) power cord, yet the instructions indicated two(2). It may support PoE, but the packing describe two(2) are included. Is this an error in the manual or packaging?
New User U
on Jun 9, 2020
is it possible to purchase a second power adaptor for the receiver?
Jeffrey K
on Sep 23, 2020
do both sides of this unit have to be powered up to work?
My application for it is to extend a laptop output into a wall port where there is no AC power and then send it out via Cat5 cable to a remote location where there is power.
My application for it is to extend a laptop output into a wall port where there is no AC power and then send it out via Cat5 cable to a remote location where there is power.
A shopper
on Sep 29, 2020
Does this device support Dolby Atmos?
A shopper
on Oct 14, 2020
Any reason why I have trouble getting Netflix and Amazon Prime to display from my Dish receiver through the transmitter. Worked fine before installation. You Tube works. Everything else works perfect. Any idea why?
Steve G
on Oct 20, 2020
I have read that many HDMI extenders get hot when working. Do these devices become hot when turned on?//////
A shopper
on Nov 4, 2020
Is this item 24281 using HDBASET? It seems like this item 24281 is newer than some reviews, is the product page accurate in stating it supports 4k60 4:2:2?
Robert B M
on Nov 25, 2020
If anybody knows, can I use HDTV (1080p) connected to HDMI OUT on Transmitter same time as UHD(4K) PJ connected to HDMI OUT on Receiver? In other words, will the HD monitor cause problem with using 4K PJ?
New User U
on Dec 14, 2020
Reviews
4.2 / 5.0
9 Reviews
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Rated 2 out of 5
Regular reboots required
It seems like these boxes go out of sync and stop transmitting. I would ask for a refund and go with HDMI over IP system instead. It's been consistent where I'll change to the HDMI input these are suppose to send image to and need to power cycle the boxes to bring back the video feed.
Disappointing overall. Good image when it works but IRRITATING reliability.
Disappointing overall. Good image when it works but IRRITATING reliability.
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September 17, 2020
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Rated 5 out of 5
Great Product
We had to replace what we had originally due to buying a 4k TV. The original require 2 Cat5 or 6 cables, this does not. Once hardware is in place and cables attached, it worked with no issues. Picture is great and we have not had any connection or other issues at all.
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Rated 4 out of 5
No mounting bracket. Instructions are incorrect.
Although the unit is very light, in a mission-critical environment you/we need to secure everything. There are no holes or bracket to do so.
Instructions incorrectly state that both receiver and transmitter need to connect to an AC/DC adapter. They do not. In fact, the package only includes one power adapter.
Instructions incorrectly state that both receiver and transmitter need to connect to an AC/DC adapter. They do not. In fact, the package only includes one power adapter.
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Rated 3 out of 5
Hit or miss, functionality. But when it works it's great
Hit or miss, functionality. But when it works it's great
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Rated 5 out of 5
Works great - great price - easy to install. What’s not to like?
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Rated 5 out of 5
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Rated 5 out of 5
Works Great
Bought this to hook up flat panel TV to media computer. Install was easy, and picture is great. Glad I bought this product.
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Rated 4 out of 5
The one that works all the time is as represented.
I purchased two of them and one of them works fine, the second one needs to have the power disconnected and reconnected each time the television is turned on. This will be returned for exchange.
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Rated 5 out of 5
Compact and reliable
The extender is used regularly allowing me to watch TV and video sources from the living room in my shop area. I have tested it with 4k, but only use 1080 at this time. It allows me to have a smaller footprint in the shop and still control the video source across the building.
Saves me money from needing an additional set-top box while also allowing me to watch movies or other feeds, since it is fed by a HDMI switch.
Saves me money from needing an additional set-top box while also allowing me to watch movies or other feeds, since it is fed by a HDMI switch.
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