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What still works when the internet goes down?
If your router and local network remain powered, locally controlled devices may still respond even when your internet connection or a vendor’s cloud service is unavailable. Matter commands, for example, can travel over the home network directly to a device rather than through Google or a manufacturer cloud, according to Google’s Matter overview. The Connectivity Standards Alliance likewise describes Matter as local connectivity, with remote control requiring an internet-connected controller at home: CSA’s Matter overview.
That does not mean every app, voice command, schedule or advanced feature will work offline. The relevant question is where each function runs. A local automation can continue if its controller and devices can communicate; an integration that must contact a vendor cloud cannot reach that cloud while internet access is down. Home Assistant lists locally connected Zigbee, Z-Wave, Matter, Thread and ESPHome devices as not needing internet, while warning that cloud-dependent integrations do: Home Assistant FAQ.
Local control has local requirements
“Local” does not mean infrastructure-free. A Matter setup needs a compatible hub or controller for setup and local control, and Google says IPv6 must be enabled for Matter to work properly on its home network (Google). A Thread device also needs an appropriate Thread border router/controller. Thread’s mesh can help devices communicate around the home, but it cannot substitute for a required controller or power.
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- Echo Hub — An easy-to-use smart home control panel redesigned for your home. Arrange controls on your dashboard to quickly adjust devices, view cameras, start routines, and more.
- Customize your dashboard — Arrange devices into sections and resize them to focus on what matters most. Create a personalized layout that matches how your family uses their connected devices.
- Reimagined for your home - With an Alexa+ and compatible Ring subscription (sold separately), get Ring camera event summaries to stay in the know. Search your Ring footage using simple voice commands. Create routines by voice, activate modes to manage multiple devices at once, and chat with Alexa to easily control your smart home.
- Home security for the whole family — Use Echo Hub to easily arm and disarm your compatible security system, making it easy for everyone in your family to manage home security. Use the Alexa app and compatible cameras, locks, alarms, and sensors to check in while you're out.
- Works with thousands of Alexa compatible devices — WiFi, Bluetooth, Zigbee, Matter, Sidewalk, and Thread devices sync seamlessly with the built-in smart home hub.
Zigbee and Z-Wave can also operate locally when their controller and integration are working. Amazon’s developer documentation describes Zigbee and Bluetooth LE mesh among Alexa’s supported local connectivity options: Alexa connected-home documentation. A device can still use one of these local radios while particular app functions or features depend on a cloud; check documentation for the exact model and feature rather than assuming the entire product is offline-capable.
Cloud outage, Wi-Fi outage and power outage are different
| Failure | What may still work | What is likely to fail |
|---|---|---|
| Internet or vendor-cloud outage; router and local network still on | Local device control and automations executed by an available local controller may continue. | Remote access, cloud integrations and features that require the vendor service may stop. |
| Router or Wi-Fi failure | Devices on a separate local network or radio may continue only if their controller and network path remain available. | Wi-Fi devices and controllers that depend on the failed access point can become unreachable. IKEA, for example, says its smart products need a strong Wi-Fi connection to communicate with the hub and may appear offline in its app if that connection is interrupted (IKEA smart-home support). |
| Mains power loss | Battery-powered devices may remain on, subject to their own battery and configuration. | Unbacked routers, hubs, access points and powered devices shut down; any network or automation path that depends on them is lost. |
The table describes general dependencies, not a guarantee for every product. Schneider Electric notes that internet is needed for remote control: Schneider Electric FAQ. An internet outage does not itself turn off Wi-Fi, while a router outage can remove the local path even if your internet service is otherwise available.
Rank #2
- MEET ECHO SHOW 15 - A stunning 15.6" Full-HD (1080p) smart display that's perfect for your kitchen and ready to show you more. Use customizable widgets to keep your day on track, watch your favorite shows with Fire TV and powerful vibrant sound, and enjoy natural video calling, with 3.3x zoom and wide field of view.
- FAMILY ORGANIZATION HUB - See your top widgets at a glance, like your family’s calendars and to-do lists, local weather, smart home, and more.
- ALL YOUR FAVORITES, ALL RIGHT HERE - Built-in Fire TV unlocks endless entertainment, so you can enjoy your favorite content from thousands of apps like Prime Video, Netflix, YouTube, Apple TV, and more (subscription may be required). Fire TV remote included. Plus, now you can quickly add a device to play music with Active Media - start playing a song in the kitchen, then add the living room and bedroom on the fly.
- SMART HOME CENTRAL - Control smart devices with your voice or a few taps using the smart home dashboard. Easily turn on all your living room lights at once or check live camera feeds to see what's happening around your home.
- YOUR FAVORITE MEMORIES ON DISPLAY - Brighten your space (and your day) by turning your home screen into a photo slideshow that displays your favorite memories. Auto curate your images and show off your favorite family memories.
Prepare your setup before an outage
- Inventory essential devices. For each light, lock, thermostat, sensor or other important device, record its local protocol, the controller it needs, any vendor-cloud dependency, and its physical fallback.
- Check feature-specific offline support. In the exact model’s documentation, look for local control, offline automations, LAN access, local storage, and whether the mobile app requires internet. Confirm separately for each feature; protocol support alone does not establish that every feature runs locally.
- Keep a manual control path. Preserve and know how to use wall switches, lock keys or keypads, thermostat controls and other manual options where the product provides them. Confirm the model’s actual behavior rather than assuming a smart device retains normal controls.
- Back up the equipment that matters. If local control during a power interruption is important, connect the router and local controller to a UPS sized for their combined load and the runtime you need. A UPS only powers equipment plugged into it, within its capacity and runtime; it will not restore ISP service, repair failed router hardware or power devices elsewhere in the home. See Wirecutter’s UPS guidance.
- Back up controller configuration. Home Assistant includes configuration backup functionality (Home Assistant backup documentation). Keep a current backup so a controller failure does not also mean rebuilding its setup from scratch.
Test what your home can do offline
Do not infer outage behavior from a product label or protocol name. Test the failure modes separately, while you are home and able to restore normal service.
- Test internet loss with the router still powered. Disconnect the router’s internet/WAN connection without turning off the local network. Check device controls, scheduled actions, voice commands and app functions individually. Note what succeeds, what fails and whether a local controller is involved.
- Consider router or Wi-Fi loss separately. Identify which devices and controllers would lose their network path if the access point stopped working. Do not treat results from an internet-only test as proof that the home will work without Wi-Fi.
- Consider a power interruption. Check which router, controller and other essential equipment is actually connected to backup power, and whether the expected runtime suits your need.
- Record recovery steps. Note how to restore the network, which devices need attention afterward, and how to operate essential functions manually.
This is a recommended procedure, not a claim that any particular home or device was tested. Exact offline behavior can vary with model, firmware, controller configuration and the feature in question.
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Quick Recap
Rank #4
- New size, more viewing area: The 11“ smart display features a vibrant Full-HD touchscreen with 60% more viewing area versus Echo Show 8 (2025 release), built-in smart home hub, AZ3 Pro chip for powerful performance, and Omnisense technology for highly personalized experiences.
- Content looks and sounds incredible: Watch shows on Prime Video, Netflix, and more on the vibrant Full-HD 11" screen and enjoy room-filling spatial audio, crisper vocals, wider sound stage, and up to 2x bass versus Echo Show 8 (2023 release). With Alexa+, find the name of that song you love and discover new shows based on your preferences.
- Your everyday assistant: The 11" display makes it easy to see recipes and calendars at a glance, find meal inspo, and manage your shopping lists. With Alexa+, find recipes based on foods you love, make reservations, order groceries, and more.
- Simple Smart Home control: Pair and control thousands of devices that work with Alexa without needing a separate smart home hub. Easily view your camera feeds. Manage lights, thermostats, and more using the display or your voice. With Omnisense technology, you can activate routines via temperature, presence, or visual ID detection.
- Crystal-clear video calls: Video calls feel natural on the vibrant 11" screen with a centered, auto-framing camera, 3.3x zoom, and noise reduction technology. Use live view to check in on your family, pets, and more while you're away.
Rank #3
- Powered by SmartThings: Connect, monitor, and automate your home through the SmartThings app. Build a reliable, unified smart home using Samsung's proven ecosystem
- Matter + Zigbee Smart Home Hub: Supports the newest Matter standard plus Zigbee for lighting, sensors, plugs, switches, thermostats, and more - thousands of compatible devices. PLEASE NOTE: Z-Wave not supported
- Easy Setup with Wi-Fi or Ethernet: Get started in minutes using Wi-Fi or a wired Ethernet connection for apartments, houses, and expanding smart home systems - Z-Wave not supported
- Automations That Work for You: Create custom routines for security, lighting, comfort, and energy savings. Many local automations continue working even if your internet goes offline
- Wide Device Compatibility: Connect compatible smart devices from Aeotec and many other brands to build a unified system for lighting, voice control, energy management, and climate settings
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
