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4-Pack KMC Slim Low-Profile Wi-Fi Smart Plug (15A, 1875W) Expired

$10.25
$20.49
+23 Deal Score
11,534 Views
KT-KMC via Amazon has 4-Pack KMC Slim Low-Profile Wi-Fi Smart Plug (White, kt-154) on sale for $10.24. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter StrifeZero for sharing this deal.

About this product:
  • Allows user to remote control lights, devices and to set scenes across the home
  • App allows to automate connected devices based on conditions like time, sunrise/sunset, weather, device status and more
  • Compatible with Alexa & Google Assistant for voice control
  • Low-profile design doesn't block the other outlet
  • Electrical Ratings: 15A, 125V, 60Hz, 1875W
  • UL/ETL Certified
  • US-based technical support and lifetime warranty

Editor's Notes & Price Research

Written by
  • About this Store:
  • Additional Information:
    • This offer matches our front page deal from March 2024 which earned over 35 thumbs up and is priced at $2.56 per smart plug.
    • Rated 4.3 out of 5 stars on Amazon based on over 440 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
Good Deal?

Original Post

Written by
Edited April 28, 2024 at 12:58 PM by
KT-KMC via Amazon [amazon.com] has 4-Pack KMC Slim Low-Profile Wi-Fi Smart Plugs on sale for $10.24. Shipping is free w/ Amazon Prime or on orders $35+
If you purchase something through a post on our site, Slickdeals may get a small share of the sale.
Deal
Score
+23
11,534 Views
$10.25
$20.49
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Featured Comments

They're slim in the sense that you can fit two in a regular/dual outlet, one doesn't block the other outlet.
These do NOT have power monitoring, but at ~ $2.50 a piece, hard to complain.

These can be reflashed with the OpenBeken firmware using tuya-cloudcutter (similar to tasmota using tuya-convert).
I've flashed an entire 4-pack the last time this deal was posted.
I usually just follow the readme, but I'm a fairly advanced user, so I don't expect this can work for everybody.
The most 'difficult' part I'd say is installing tuya-cloudcutter.
I happen to have a bunch of raspberry pi boards lying around, so i used a raspberry pi 4 to install tuya-cloudcutter on, which was fairly straightforward.

Once you have that installed, flashing is relatively easy.
Run tuya-cloudcutter.
Follow the instructions shown on screen.
Select manufacturer KMC, and device profile 30153 (not 30154)
Put the device in 'slow flashing mode' (keep button pressed for 4-6 seconds, which will put it in 'fast-flashing mode', release, press and keep pressed for 4-6 seconds again, now the LED should be flashing slowly).
Cloudcutter will do its thing and then instruct you to powercycle the device, and put it in slow flashing mode again.
After that second time, when the device reboots, it should broadcast an OpenBeken_XXX accesspoint that you can the n connect to.
Connect to it, and configure it like tasmota (wifi to connect to, mqtt server etc.).

Again, this isn't for everybody, but for myself, and many others, the benefits outweigh this (relatively small one-time) effort.

I'll see if I can find some youtube showing this process, there's a lot of old stuff out there that no longer applies, no need to break open devices, desolder chips etc.

EDIT:

A youtube video describing the process:

https://m.youtube.com/watch?v=VFsuza3UAhk
Flashing with a custom firmware like Tasmota or OpenBeken removes the dependency on 'the cloud'.

My plugs will continue to function, even if my internet is down (while I'm still at home), and also when the manufacturer's cloud is down (maintenance or whatnot), or when they decide to no longer support the platform, and simply pull the plug (or start charging subscription fees …).

Also, the responsiveness/latency is unbeatable, since I avoid the entire roundtrip of App -> internet -> cloudservice -> internet -> smartdevice.
Instead it becomes App/HomeKit/Home Assistant -> smartdevice.

It's not for everybody. If you prefer plug&play and don't mind installing an app for each device/vendor (and/or use Google/Alexa etc.) then there's no need to flash.

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Joined Feb 2007
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> bubble2 4,714 Posts
743 Reputation
warezdog
04-28-2024 at 11:21 AM.
04-28-2024 at 11:21 AM.
Great deal but at 1.3" they're not really slim but for $2.50 each its hard to complain about it.
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Joined Oct 2007
L10: Grand Master
> bubble2 12,125 Posts
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arribasn
04-28-2024 at 01:26 PM.
04-28-2024 at 01:26 PM.
deal has been on and off a few months if you search forum
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Joined May 2019
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> bubble2 309 Posts
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Not_Johnnybravo
04-28-2024 at 01:33 PM.

Our community has rated this post as helpful. If you agree, why not thank Not_Johnnybravo

04-28-2024 at 01:33 PM.
They're slim in the sense that you can fit two in a regular/dual outlet, one doesn't block the other outlet.
These do NOT have power monitoring, but at ~ $2.50 a piece, hard to complain.

These can be reflashed with the OpenBeken firmware using tuya-cloudcutter (similar to tasmota using tuya-convert).
I've flashed an entire 4-pack the last time this deal was posted.
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Joined Jul 2017
New User
> bubble2 8 Posts
10 Reputation
tinu71214
04-28-2024 at 02:18 PM.
04-28-2024 at 02:18 PM.
Quote from Not_Johnnybravo :
They're slim in the sense that you can fit two in a regular/dual outlet, one doesn't block the other outlet.
These do NOT have power monitoring, but at ~ $2.50 a piece, hard to complain.

These can be reflashed with the OpenBeken firmware using tuya-cloudcutter (similar to tasmota using tuya-convert).
I've flashed an entire 4-pack the last time this deal was posted.

How does flashing help
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Joined Dec 2005
L4: Apprentice
> bubble2 404 Posts
235 Reputation
Cypher2001
04-28-2024 at 02:39 PM.
04-28-2024 at 02:39 PM.
Quote from Not_Johnnybravo :
They're slim in the sense that you can fit two in a regular/dual outlet, one doesn't block the other outlet.
These do NOT have power monitoring, but at ~ $2.50 a piece, hard to complain.

These can be reflashed with the OpenBeken firmware using tuya-cloudcutter (similar to tasmota using tuya-convert).
I've flashed an entire 4-pack the last time this deal was posted.
Thanks for this. Nothing worse than buying this to find out they have patched firmware on them.
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Joined Apr 2015
L2: Beginner
> bubble2 32 Posts
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LordPuba101
04-28-2024 at 03:47 PM.
04-28-2024 at 03:47 PM.
Quote from SeriousIdea6470 :
This could be worst Smart plugs.
I got similar price from 4x Tuya smart plug (with USB-C port on the top with more features) for $8

Can link that deal please ?
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Joined May 2019
L4: Apprentice
> bubble2 309 Posts
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Not_Johnnybravo
04-28-2024 at 06:02 PM.

Our community has rated this post as helpful. If you agree, why not thank Not_Johnnybravo

04-28-2024 at 06:02 PM.
Quote from tinu71214 :
How does flashing help
Flashing with a custom firmware like Tasmota or OpenBeken removes the dependency on 'the cloud'.

My plugs will continue to function, even if my internet is down (while I'm still at home), and also when the manufacturer's cloud is down (maintenance or whatnot), or when they decide to no longer support the platform, and simply pull the plug (or start charging subscription fees …).

Also, the responsiveness/latency is unbeatable, since I avoid the entire roundtrip of App -> internet -> cloudservice -> internet -> smartdevice.
Instead it becomes App/HomeKit/Home Assistant -> smartdevice.

It's not for everybody. If you prefer plug&play and don't mind installing an app for each device/vendor (and/or use Google/Alexa etc.) then there's no need to flash.
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Joined Aug 2015
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> bubble2 13 Posts
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clyde.mcfadden29
04-28-2024 at 06:04 PM.
04-28-2024 at 06:04 PM.
Quote from Not_Johnnybravo :
Flashing with a custom firmware like Tasmota or OpenBeken removes the dependency on 'the cloud'.

My plugs will continue to function, even if my internet is down (while I'm still at home), and also when the manufacturer's cloud is down (maintenance or whatnot), or when they decide to no longer support the platform, and simply pull the plug (or start charging subscription fees …).

Also, the responsiveness/latency is unbeatable, since I avoid the entire roundtrip of App -> internet -> cloudservice -> internet -> smartdevice.
Instead it becomes App/HomeKit/Home Assistant -> smartdevice.

It's not for everybody. If you prefer plug&play and don't mind installing an app for each device/vendor (and/or use Google/Alexa etc.) then there's no need to flash.

Is there a good YouTube resource that you use?
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Joined May 2019
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> bubble2 309 Posts
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Not_Johnnybravo
04-28-2024 at 07:37 PM.

Our community has rated this post as helpful. If you agree, why not thank Not_Johnnybravo

04-28-2024 at 07:37 PM.
Quote from clyde.mcfadden29 :
Is there a good YouTube resource that you use?
I usually just follow the readme, but I'm a fairly advanced user, so I don't expect this can work for everybody.
The most 'difficult' part I'd say is installing tuya-cloudcutter.
I happen to have a bunch of raspberry pi boards lying around, so i used a raspberry pi 4 to install tuya-cloudcutter on, which was fairly straightforward.

Once you have that installed, flashing is relatively easy.
Run tuya-cloudcutter.
Follow the instructions shown on screen.
Select manufacturer KMC, and device profile 30153 (not 30154)
Put the device in 'slow flashing mode' (keep button pressed for 4-6 seconds, which will put it in 'fast-flashing mode', release, press and keep pressed for 4-6 seconds again, now the LED should be flashing slowly).
Cloudcutter will do its thing and then instruct you to powercycle the device, and put it in slow flashing mode again.
After that second time, when the device reboots, it should broadcast an OpenBeken_XXX accesspoint that you can the n connect to.
Connect to it, and configure it like tasmota (wifi to connect to, mqtt server etc.).

Again, this isn't for everybody, but for myself, and many others, the benefits outweigh this (relatively small one-time) effort.

I'll see if I can find some youtube showing this process, there's a lot of old stuff out there that no longer applies, no need to break open devices, desolder chips etc.

EDIT:

A youtube video describing the process:

https://m.youtube.com/watch?v=VFsuza3UAhk
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Last edited by Not_Johnnybravo April 28, 2024 at 09:35 PM.
Joined Jan 2017
Boy Genius
> bubble2 328 Posts
178 Reputation
Master.Billy.Quizboy
04-28-2024 at 07:57 PM.
04-28-2024 at 07:57 PM.
Quote from tinu71214 :
How does flashing help

Have you seen any deals on cheap smart outlets WITH power monitoring? What's considered a good deal for those?
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Joined Aug 2015
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> bubble2 13 Posts
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clyde.mcfadden29
04-28-2024 at 08:05 PM.
04-28-2024 at 08:05 PM.
Quote from Not_Johnnybravo :
I usually just follow the readme, but I'm a fairly advanced user, so I don't expect this can work for everybody.
The most 'difficult' part I'd say is installing tuya-cloudcutter.
I happen to have a bunch of raspberry pi boards lying around, so i used a raspberry pi 4 to install tuya-cloudcutter on, which was fairly straightforward.

One you have that installed, flashing is relatively easy.
Run tuya-cloudcutter.
Follow the instructions shown on screen.
Select manufacturer KMC, and device profile 30153 (not 30154)
Put the device in 'slow flashing mode' (keep button pressed for 4-6 seconds).
Cloudcutter will do its thing and then instruct you to powercycle the device, and put it in slow flashing mode again.
After that second time, when the device reboots, it should broadcast an OpenBeken_XXX accesspoint that you can the n connect to.
Connect to it, and configure it like tasmota (wifi to connect to, mqtt server etc.).

Again, this isn't for everybody, but for myself, and many others, the benefits outweigh this (relatively small one-time) effort.

I'll see if I can find some youtube showing this process, there's a lot of old stuff out there that no longer applies, no need to break open devices, desolder chips etc.

Much appreciation!
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Joined May 2019
L4: Apprentice
> bubble2 309 Posts
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Not_Johnnybravo
04-28-2024 at 08:10 PM.
04-28-2024 at 08:10 PM.
Quote from Master.Billy.Quizboy :
Have you seen any deals on cheap smart outlets WITH power monitoring? What's considered a good deal for those?
My personal 'threshold' for plugs with power monitoring is less than $5/plug, YMWV (Your Mileage Will Vary 😉).
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Joined Jan 2017
Boy Genius
> bubble2 328 Posts
178 Reputation
Master.Billy.Quizboy
04-28-2024 at 08:20 PM.
04-28-2024 at 08:20 PM.
I paid $5 per plug a few years, for those without monitoring! I stopped after a few because it felt like too much. For monitoring, it seems fair. And the current rating on these simpler plugs still seems pretty good.
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