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Great mesh system. Easy to add devices through the app and Wi-Fi speeds are consistent as you move through the mesh environment. Easy to set passwords and set up a Guest Network if needed, newer versions of the S4 have and IOT network option as well as an option to force which Deco the satellite Deco(s) gets their signal from on an individual basis.
IMPORTANT NOTE:
If you are going to utilize the ethernet backhaul function (which I recommend if your set up is able to accommodate it) and have any switches on your system, those switches must have LOOP PREVENTION capabilities and must be enabled in the switch's software. I standard unmanaged switch will cause the Decos to loop and cause a plethora of issues on your system, to name a few I encountered before replacing my switches with managed ones: Accessing the TP-Link app would cause the main Deco to lose connection to the internet and it would take many reboots to get it connected again, Decos would report as off-line when they were in fact not off-line, firmware updates would not install and/or it could not even check for them automatically, adjusting settings in the app would not stick, Echo devices would not communicate properly on my network, most of the time running the Network Optimization function within the app to check for channels that have too much interference would fail, if one deco was unplugged or the power went out it would take hours of messing with the system to get them all back on-line. Once I replaced the switches with managed ones all of the issues disappeared instantly.
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$99.98 with 23 percent savings $33.33 per count
List Price: $129.99 
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This item: TP-Link Deco Mesh AC1900 WiFi System (Deco S4) – Up to 5,500 Sq.ft. Coverage, Replaces WiFi Router and Extender, Gigabit Ports, Works with Alexa, 3-pack
$99.98 ($33.33/count)
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From the manufacturer
Fast and Seamless WiFi throughout Your Home
Get fast and seamless WiFi throughout your home. Three Deco S4 units work together to create a single network that provides coverage up to 5,500 sq. ft, so you can keep your devices connected even as you move about your home.[1]
Need more coverage? No problem! All Deco units work together so all you need to do is add another Deco unit to expand your coverage.
Intelligent WiFi with TP-Link Mesh
Seamless Roaming
Deco automatically connects you to the closest router so you can experience seamless streaming as you move around your home.[2]
One Name. One Password.
Create a single network that only needs one name and password to keep all your devices connected as you move from room to room.
Self-Healing
Reroutes traffic to keep you streaming and gaming, even if one of your Deco units loses power or experiences a disruption.
Adaptive Path Selection
Automatically finds the best path and connection for every device.
No More Buffering
With AC wireless technology. Deco can provide lag-free connections for over 100 devices. Say goodbye to network interruption or buffering.1
Parental Controls
The Deco app makes it easy to manage, limit and monitor internet use for the whole family. Create customizable profiles for each person to filter content and block websites, set time limits, receive reports and suspend internet access based on time of day for certain devices or the entire home.
Easy Setup
Simply unpack the system, download the Deco app (Android, iOS) and follow on-screen instructions to set up in minutes.
Convenient Management
Manage your WiFi network in the Deco app by viewing connected devices, prioritizing devices or activities, setting up guest networks and more.
Remote Control
Control your WiFi while at home or away using the Deco app and even set up robust parental controls
Voice Control
Pair with Alexa to share your guest password, add devices and more using just your voice.
Compare with similar items
This Item  TP-Link Deco Mesh AC1900 WiFi System (Deco S4) – Up to 5,500 Sq.ft. Coverage, Replaces WiFi Router and Extender, Gigabit Ports, Works with Alexa, 3-pack | Recommendations  |  |  |  |  | |
| Price | -23% $99.98 List: $129.99 | -23% $169.99 List: $219.99 | $99.99 | $86.00 | $19.99 | -10% $89.99 Typical: $99.90 |
| Delivery | Get it as soon as Friday, May 30 | Get it as soon as Friday, May 30 | Get it as soon as Friday, May 30 | Get it as soon as Friday, May 30 | Get it as soon as Monday, Jun 2 | Get it as soon as Friday, May 30 |
| Customer Ratings | ||||||
| Sold By | Amazon.com | Amazon.com | Tenda Official | Mercku | PETIMETI | Cudy |
| connectivity tech | Ethernet, Wi-Fi | Wi-Fi, Ethernet | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| number of ports | 6 | 6 | 6 | 2 | 4 | 2 |
| data transfer rate | 1200 megabits per second | 5400 megabits per second | 1201 megabytes per second | 10 gigabits per second | 1 gigabits per second | 1300 megabits per second |
| wireless standard | 802 11 AC | 802 11 AX, 802 11 AC, 802 11 N, 802 11 B, 802 11 G | 802 11 AX | 5 ghz radio frequency, 802 11 AX | 802 11 AX | 802 11 AC |
| frequency band class | dual band | tri band | dual band | dual band | dual band | dual band |
| lan port bandwidth | 1000 Mbps | 10/100/1000 Mbps | 12 Gbps | 1000 Mbps | 1 Gbps | 10/100/1000Mbps |
| max upstream rate | 950 megabits per second | 2402 megabits per second | 1000 megabits per second | 1000 megabits per second | 1024 megabits per second | 1000 megabits per second |
| security protocol | WPS | WPA3-Personal, WPA2-Personal, WPA-Personal | — | WPA3 | — | WPA2-PSK |
| frequency | — | — | — | 5 GHz | 5 GHz | 5 GHz |
| operating system | Linux | — | RouterOS, Junos OS, or Cisco IOS | ZyNOS | — | RouterOS |
| antenna type | internal | internal | — | internal | fixed | internal |
Product information
| Product Dimensions | 3.57 x 3.57 x 6.39 inches |
|---|---|
| Item Weight | 4.2 pounds |
| ASIN | B084GTH5LL |
| Item model number | Deco S4(3-Pack) |
| Customer Reviews |
4.5 out of 5 stars |
| Best Sellers Rank | #1,256 in Electronics (See Top 100 in Electronics) #11 in Whole Home & Mesh Wi-Fi Systems |
| Date First Available | February 21, 2020 |
| Manufacturer | TP-Link |
| Country of Origin | Vietnam |
Warranty & Support
Product Warranty: For warranty information about this product, please click here. [PDF ]
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Just What I Needed
I recently moved into a new home with three levels. My coaxial input to the home is on the ground level which is where Xfinity installed my cable modem/router unit. If I'm on the ground level the speeds I get are fantastic(over 550Mbps down and over 100 up). However by the time I reach the third story where the bedrooms are my speeds were falling off a cliff to about 40 and below, and at times fully disconnecting from my home Wi-Fi. This is where the Deco comes in. My main Deco connects via ethernet to my Xfinity cable modem/router and sends the Wi-Fi signal to the satellite units. I have the second Deco on the 2nd floor where my living room is, and my third Deco in the hallway of the third floor where all the bedrooms are. With this setup, I'm able to get MUCH more reliable speeds throughout the house. I have screenshots of the speeds I get near main Deco, Deco 2 and Deco 3. I go from 550/115 on the ground floor to 250-300/100 on the second floor, and reliably 180-220/85 on the top floor. More long-term I plan to route ethernet cable through the house and set up the Deco's using ethernet backhaul which will give the Deco's a more reliable connection to talk to each other and save the Wi-Fi only for providing connections to the clients on the network. The app works well too. I'm able to set up connection preferences to have the Deco's arranged the way I want as well as set fixed position devices like a desktop or smart TV to only connect to a particular Deco that is within range. The flexibility of this system is great.
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