TP-Link Deco S4 User manual

Deco S4
Fast, Stable, Everywhere
User Guide
AC1900 Whole Home Mesh Wi-Fi System
1910013408 REV3.6.0 ©2023 TP-Link

Contents
About This Guide ····················································································································1
Appearance ·······························································································································2
Set Up Your Deco ···················································································································3
Troubleshooting ······················································································································7
Authentication··························································································································8

1
About This Guide
This guide provides a brief introduction to AC1900 Whole Home Mesh Wi-Fi System and regulatory information.
Features available in Deco may vary by model and software version. Deco availability may also vary by region or ISP. All images, steps, and descriptions
in this guide are only examples and may not reect your actual Deco experience.
Conventions
In this guide, the following conventions are used:
Convention Description
Deco Stands for Deco Whole Home Mesh Wi-Fi System/
Unit.
Underline Hyperlinks are in teal and underlined. You can click to
redirect to a website or a specic section.
Teal
Key information appears in teal, including
management page text such as menus, items,
buttons and so on.
Note: Ignoring this type of note might result in a malfunction
or damage to the device.
Tips: Indicates important information that helps you make
better use of your device.
More Info
• Specic product information can be found on the product page at
https://www.tp-link.com.
• A Technical Community is provided for you to discuss our products
at https://community.tp-link.com.
• Our Technical Support contact information can be found at the
Help center of the Deco app and the Contact Technical Support
page at https://www.tp-link.com/support.
Speed/Coverage/Device Quantity Disclaimer
Maximum wireless signal rates are the physical rates derived from IEEE
Standard 802.11 specications. Actual wireless data throughput and
wireless coverage, and quantity of connected devices are not guaranteed
and will vary as a result of network conditions, client limitations, and
environmental factors, including building materials, obstacles, volume and
density of trac, and client location.
MU-MIMO Disclaimer
Use of MU-MIMO requires clients to also support MU-MIMO.
Seamless Roaming Disclaimer
Clients need to support 802.11k/v/r and may require additional set up.
Performance may vary depending on the client device.

2
Appearance
Each Deco has an LED that changes color according to its status, three RJ-45 Ethernet ports, a power slot, and a Reset button. See the explanation
below:
Tip: The product label can be found at the bottom of the product.
Pluse Yellow:
Deco is resetting.
Solid Yellow:
Deco is starting up.
Pluse Blue:
Deco is ready for setup,
or WPS in progress.
Solid Blue:
Deco is setting up.
Pluse White:
Deco is upgrading rmware.
Solid White:
Deco is all set up and connected.
Pluse Red:
Deco is disconnected from main Deco.
Solid Red:
Deco has an issue.
Ethernet Ports:
For connecting Deco to your modem, the
Ethernet outlet, or to other internet devices.
Reset Button:
Press for 1 second and release to reset Deco
to factory default settings. The light changing
from pulsing yellow to solid yellow indicates a
successful reset.
Power Slot:
For connecting Deco to the power socket via
the provided power adapter.

3
Set Up Your Deco
First let's start by setting up the Deco network. Get the TP-Link Deco app for iOS or Android, then follow the app to walk through the setup.
1. Get the Deco app
Scan the QR code below or go to Google
Play or the App Store to download the Deco
app. Install the app on your Android or iOS
smartphone or tablet.
or
2. Log in or sign up with TP-Link ID
Open the app and log in with your TP-Link ID. If
you don’t have a TP-Link ID, create one rst.
Note: If you forgot your login password, tap Forgot Password?.
The app will help you reset your password.
3. Select your Deco model
Search for and select your Deco model. If
you have more than one Deco model, tap the
question below the search box to check how
to maximize the overall network.

4
4. Plug in your Deco
Power o your modem. Connect your Deco to
the modem and power them both on.
If you don't have a modem, connect your
Deco directly to the Ethernet outlet.
5. Wait until Deco's LED pulses blue
Wait until Deco's LED pulses blue, then
connect your phone/tablet to the Deco's Wi-Fi
using the default SSID printed on the product
label.
6. Specify your Deco's location
Select or custom a location for your Deco.
The location will be used as the name of your
Deco.

5
9. Connect to your Wi-Fi network
Connect your phone/tablet to the Deco's Wi-Fi.
8. Create your Wi-Fi network
Set a network name and a password. These
will be the name and password you use to
connect your devices to Wi-Fi.
7. Connect your Deco to the internet
Select the internet connection type and enter
the information. If you are not sure, contact
your internet service provider.

6
10. Setup complete
Your Deco network is now up. You can connect
your devices to the Deco network. You can also
plug in the other included Decos, and they will
automatically join the network within 2 minutes.

7
Troubleshooting
Solutions to common problems during setup or use are provided here for reference. Follow the steps and the provided link below to diagnose and solve
problems you might experience with your Deco.
If problems still exist, contact us: https://www.tp-link.com/support
Q1. What should I do if I fail to congure the main Deco and get stuck on “We couldn't nd Deco”?
Refer to the guide https://www.tp-link.com/support/faq/2239/ or follow the video https://youtu.be/2HYuEYS9XJM
Q2. What should I do if I fail to congure the satellite Deco and get stuck on “We couldn't nd another Deco”?
Refer to the guide https://www.tp-link.com/support/faq/1447/ or follow the video https://youtu.be/iVgDzoo16T4
Q3. What should I do if I fail to congure the main Deco and get stuck on “Testing Internet Connection”?
Refer to the guide https://www.tp-link.com/support/faq/2239/
Refer to the video https://youtu.be/OSUrGdWH-i0
Q4. What should I do if my wireless devices cannot connect to Deco?
Refer to the guide https://www.tp-link.com/support/faq/2718/
Q5. What should I do if Deco suddenly lost internet access?
Refer to the guide https://www.tp-link.com/support/faq/2428/
Q6. How can I nd a suitable spot for my Deco?
Refer to the guide https://www.tp-link.com//support/faq/1446/
Q7. What can I do if the Deco app isn't working properly?
Refer to the guide https://www.tp-link.com/support/faq/1456/

8
Authentication
FCC Compliance Information Statement
Product Name: AC1900 Whole Home Mesh Wi-Fi System
Model Number: Deco S4
Component Name Model
I.T.E Power Supply T120150-2B1
Responsible party:
TP-Link USA Corporation
Address: 10 Mauchly, Irvine, CA 92618
Website: http://www.tp-link.com/us/
Tel: [phone]
Fax: [phone]
E-mail: [email protected]om
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

9
• Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the
equipment.
Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications
could void the user’s authority to operate the equipment.
FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna must not be
co-located or operating in conjunction with any other antenna or transmitter.
Tocomply withFCCRFexposure compliancerequirements, thisgrantisapplicableto onlyMobile Configurations.Theantennasusedfor this transmitter
must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with
any other antenna or transmitter.
We, TP-Link USA Corporation, has determined that the equipment shown as above has been shown to comply with the applicable technical standards,
FCC part 15. There is no unauthorized change is made in the equipment and the equipment is properly maintained and operated.
Issue Date: 2023-05-11

10
FCC Compliance Information Statement
Product Name: I.T.E POWER SUPPLY
Model Number: T120150-2B1
Responsible party:
TP-Link USA Corporation
Address: 10 Mauchly, Irvine, CA 92618
Website: http://www.tp-link.com/us/
Tel: [phone]
Fax: [phone]
E-mail: [email protected]om
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.

11
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the
equipment.
We, TP-Link USA Corporation, has determined that the equipment shown as above has been shown to comply with the applicable technical standards,
FCC part 15. There is no unauthorized change is made in the equipment and the equipment is properly maintained and operated.
Issue Date: 2023-05-11

12
CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take
adequate measures.
OPERATING FREQUENCY(the maximum transmitted power)
2400MHz—2483.5MHz (20dBm)
5150MHz—5250MHz (23dBm)
Frequency band: 5150 - 5250 MHz:
Indoor use: Inside buildings only. Installations and use inside road vehicles and train carriages are not permitted. Limited outdoor use: If used outdoors,
equipment shall not be attached to a fixed installation or to the external body of road vehicles, a fixed infrastructure or a fixed outdoor antenna. Use
by unmanned aircraft systems (UAS) is limited to within the 5170 - 5250 MHz band.
EU Declaration of Conformity
TP-Link hereby declares that the device is in compliance with the essential requirements and other relevant provisions of directives 2014/53/EU,
2009/125/EC, 2011 /65/EU and (EU) 2015/863.
The original EU Declaration of Conformity may be found at https://www.tp-link.com/en/support/ce/
RF Exposure Information
This device meets the EU requirements (2014/53/EU Article 3.1a) on the limitation of exposure of the general public to electromagnetic fields by way
of health protection.
The device complies with RF specifications when the device used at 20 cm from your body.
National restrictions
Attention: This device may only be used indoors in all EU member states and EFTA countries, and Northern Ireland.

13
AT BE BG CH CY CZ DE DK
EE EL ES FI FR HR HU IE
IS IT LI LT LU LV MT NL
NO PL PT RO SE SI SK UK(NI)
UKCA Mark
UK Declaration of Conformity
TP-Link hereby declares that the device is in compliance with the essential requirements and other relevant provisions of the Radio Equipment
Regulations 2017.
The original UK Declaration of Conformity may be found at https://www.tp-link.com/support/ukca/
National restrictions
Attention: This device may only be used indoors in Great Britain.
UK
Canadian Compliance Statement
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux
deux conditions suivantes :

14
1. l’appareil ne doit pas produire de brouillage;
2. l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, meme si le brouillage est susceptible d’en compromettre le
fonctionnement.
Caution:
The device for operation in the band 5150–5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile
satellite systems;
Avertissement:
Le dispositif fonctionnant dans la bande 5150-5250 MHz est réservé uniquement pour une utilisation à l’intérieur afin de réduire les risques de
brouillage préjudiciable aux systèmes de satellites mobiles utilisant les mêmes canaux;
Radiation Exposure Statement:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated
with minimum distance 20cm between the radiator & your body.
Déclaration d’exposition aux radiations:
Cet équipement est conforme aux limites d’exposition aux rayonnements IC établies pour un environnement non contrôlé. Cet équipement doit être
installé et utilisé avec un minimum de 20 cm de distance entre la source de rayonnement et votre corps.
Industry Canada Statement
CAN ICES-3 (B)/NMB-3(B)
Korea Warning Statements:
당해 무선설비는 운용중 전파혼신 가능성이 있음.

15
NCC Notice & BSMI Notice:
注意！
取得審驗證明之低功率射頻器材，非經核准，公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。
低功率射頻器材之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。
前述合法通信，指依電信管理法規定作業之無線電通信。
低功率射頻器材須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
應避免影響附近雷達系統之操作。
安全諮詢及注意事項
• 請使用原裝電源供應器或只能按照本產品注明的電源類型使用本產品。
• 清潔本產品之前請先切斷電源。請勿使用液體、噴霧清潔劑或濕布進行清潔。
• 注意防潮，請勿將水或其他液體潑灑到本產品上。
• 插槽與開口供通風使用，以確保本產品的操作可靠並防止過熱，請勿堵塞或覆蓋開口。
• 請勿將本產品置放於靠近熱源的地方。除非有正常的通風，否則不可放在密閉位置中。
• 不要私自拆開機殼或自行維修，如產品有故障請與原廠或代理商聯繫。
限用物質含有情況標示聲明書
設備名稱：
Equipment name:
AC1900 Whole Home Mesh Wi-Fi System
型號（型式）：
Type designation (Type)
Deco S4
單元
Unit
限用物質及其化學符號
Restricted substances and its chemical symbols
鉛
Lead
(Pb)
汞
Mercury
(Hg)
鎘
Cadmium
(Cd)
六價鉻
Hexavalent
chromium
(Cr+6)
多溴聯苯
Polybrominated
biphenyls
(PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)

16
PCB ○ ○ ○ ○ ○ ○
外殼 ○ ○ ○ ○ ○ ○
電源供應器 −○ ○ ○ ○ ○
其他及其配件 −○ ○ ○ ○ ○
備考1.超出0.1wt%”及“超出0.01wt%”系指限用物質之百分比含量超出百分比含量基準值。
Note 1：“Exceeding 0.1 wt %” and “exceeding 0.01 wt %” indicate that the percentage content of the restricted substance exceeds the
reference percentage value of presence condition.
備考2.“○”系指該項限用物質之百分比含量未超出百分比含量基準值。
Note 2：“○” indicates that the percentage content of the restricted substance does not exceed the percentage of reference value of presence.
備考3.“−”系指該項限用物質為排除項目。
Note 3：The “−” indicates that the restricted substance corresponds to the exemption.
Продукт сертифіковано згідно с правилами системи УкрСЕПРО на відповідність вимогам нормативних документів та вимогам,
що передбачені чинними законодавчими актами України.
Safety Information
• Keep the device away from water, fire, humidity or hot environments.
• Do not attempt to disassemble, repair, or modify the device. If you need service, please contact us.
• Do not use damaged charger or USB cable to charge the device.
• Do not use any other chargers than those recommended.
• Do not use the device where wireless devices are not allowed.
• Adapter shall be installed near the equipment and shall be easily accessible.

17
• Use only power supplies which are provided by manufacturer and in the original packing of this product. If you have any questions, please don’t
hesitate to contact us.
• Operating Temperature: 0°C~40°C (32°F~104°F)
• Thisproductusesradiosand other components that emit electromagnetic fields. Electromagnetic fields andmagnets mayinterfere with pacemakers
and other implanted medical devices. Always keep the product and its power adapter more than 15 cm (6 inches) away from any pacemakers or
other implanted medical devices. If you suspect your product is interfering with your pacemaker or any other implanted medical device, turn off
your product and consult your physician for information specific to your medical device.
Please read and follow the above safety information when operating the device. We cannot guarantee that no accidents or damage will occur due to
improper use of the device. Please use this product with care and operate at your own risk.
Explanation of the symbols on the product label
Symbol Explanation
Direct current
Alternating current
Caution
Operator’s manual
Indoor use only
Polarity of d.c. power connector
Energy efficiency marking
Class II equipment

18
Symbol Explanation
RECYCLING
This product bears the selective sorting symbol for Waste electrical and electronic equipment (WEEE). This means
that this product must be handled pursuant to European directive 2012/19/EU in order to be recycled or dismantled to
minimize its impact on the environment.
User has the choice to give his product to a competent recycling organization or to the retailer when he buys a new
electrical or electronic equipment.