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Three white cylindrical mesh Wi-Fi units, matte finish, reset button underneath

TP-Link

TP-Link Deco S4 v3.6 (3-pack) mesh Wi-Fi system

SKU CH-NDSQ-4STC9 MPN Deco S4 v3.6(3-pack)

A three-unit mesh Wi-Fi system covering up to 5,500 sq.ft. with AC1900 dual-band speeds for over 100 devices

  • Router & satellite counts3-Pack (3 Routers)
  • Covered areaUp to 5,500 sq.ft.
  • Network ports6
  • Extra ports3 x Gigabit Ports *Per Deco Unit Supports WAN/LAN auto-sensi
  • Wi-fi standards5 GHz: 1,300 Mbit/s (802.11ac) 2.4 GHz: 600 Mbit/s (802.11n)
  • Wireless speedAC1900 5 GHz: 1,300 Mbit/s (802.11ac) 2.4 GHz: 600 Mbit/s (8
  • Covers up to 5,500 sq.ft. with three mesh units
  • Single network name enables seamless roaming throughout the home
  • AC1900 dual-band Wi-Fi delivers up to 1,300 Mbps on 5 GHz
  • Supports over 100 connected devices with stable connections
  • Six Gigabit Ethernet ports provide wired backhaul flexibility

Three-Unit Mesh System

The TP-Link Deco S4 v3.6 (3-pack) is a whole-home mesh Wi-Fi system that uses three identical units to replace a traditional router and extenders. Each unit delivers AC1900 dual-band performance with 5 GHz at 1300 Mbps and 2.4 GHz at 600 Mbps, providing a single network name across the coverage area. The system includes six Gigabit LAN ports in total and supports WAN/LAN auto-sensing for flexible internet connections.

Homeowners Needing Seamless Roaming

This system suits households up to 5,500 sq.ft. that want seamless roaming for over 100 devices without managing multiple network names. It fits users who prefer simple app-based setup and parental controls with SPI firewall protection. Buyers requiring a dedicated 6 GHz band, multi-gigabit wired ports beyond 1 Gbps, or a built-in modem should consider other solutions.

AC1900 Dual-Band Rating

The decisive specification is the AC1900 dual-band wireless rating, which defines the maximum combined throughput of 1300 Mbps on 5 GHz and 600 Mbps on 2.4 GHz. This ceiling determines whether the system can handle your peak streaming, gaming, and browsing loads across all connected devices. If your internet plan or local traffic regularly exceeds this aggregate bandwidth, a higher-rated mesh kit will be necessary.

How it compares

Measured against everything we stock in Mesh Wi-Fi Systems, at today’s prices. Recalculated every night.

Price $69.99
Cheaper than about 92% of the 99 comparable items (median $190.99).

Specifications

Product
Brand nameTP-Link
Model nameDeco S4 v3.6 (3-pack)
Part numberDeco S4(3-Pack)
Product colorWhite
Product typeMesh WiFi System
Appliance typeSPI Firewall
Connectivity
Wi-fi standards5 GHz: 1,300 Mbit/s (802.11ac)
2.4 GHz: 600 Mbit/s (802.11n)
Wireless speedAC1900
5 GHz: 1,300 Mbit/s (802.11ac)
2.4 GHz: 600 Mbit/s (802.11n)
Radio bands2.4 GHz / 5 GHz
Antenna configuration3 x Internal dual-band antennas per Deco unit
Ports & slots
Network ports6
Extra ports3 x Gigabit Ports
*Per Deco Unit
Supports WAN/LAN auto-sensing
Power
Adapter antennaInternal
Power supplyAC adapter input: 100-240 V ~ 50/60 Hz 0.4A
AC adapter output: 12 V, 1.5A
Size & build
Measurements3.6 in × 3.6 in × 6.4 in
Shipping weight1.95 kg
Package size348 × 216 × 160 mm
Compatibility
Supported platformsLinux
In the box
Router & satellite counts3-Pack (3 Routers)
Included itemsDeco S4 (3-pack)
- 3 Deco S4 Units
- 1 RJ45 Ethernet Cable
- 3 Power Adapters
- Quick Installation Guide
Environment & compliance
Certified standardsHas fcc id
Operating temperature range10%~90% non-condensing
Operating humidity range-40 °C to 70 °C (-40 °F to 158 °F)
Storage temperature range5%~90% non-condensing
Storage humidity range-40 °C to 60 °C (-40 °F to 140 °F)
More details
Covered areaUp to 5,500 sq.ft.
Security featuresWPA-PSK/WPA2-PSK
Parental controlsAccess Point Mode
Control buttons1 Reset button on the underside

Questions about this item

What comes in the 3-pack box and is anything else needed to get started?

The box contains three identical Deco units, each with three internal dual-band antennas and a reset button. A broadband modem and an internet subscription are required separately.

Should I choose the 2.4 GHz or 5 GHz band for my devices?

Both bands operate simultaneously; 2.4 GHz delivers up to 600 Mbps (802.11n) for range and 5 GHz up to 1300 Mbps (802.11ac) for speed, so devices pick the best one automatically.

What does the AC1900 rating mean for actual throughput in my home?

AC1900 combines the 1300 Mbps 5 GHz link and 600 Mbps 2.4 GHz link; real-world speeds depend on walls, interference and device capability, but the mesh covers up to 5,500 sq.ft. for 100 devices.

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