Home Assistant connects compatible smart devices from different brands and lets you coordinate them with visual automations. You can create rules such as “when motion is detected after sunset, turn on the hallway light,” usually without writing YAML.
The platform is free and open source, but your devices may require a hub, radio adapter, vendor account, or optional Home Assistant Cloud subscription. The most reliable setup combines clearly named devices, locally controlled integrations where possible, and automations that are tested against real device states.
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What you need before you start
- A computer or appliance running Home Assistant continuously.
- Smart devices, hubs, or services supported by an official Home Assistant integration.
- A working home network.
- Optional Zigbee, Thread, Matter, or Z-Wave hardware, depending on your devices.
- The official mobile app if you want phone notifications, location presence, or phone sensors.
Home Assistant must remain powered on for its automations to run. A phone running the companion app is not the Home Assistant server.
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Choose where Home Assistant will run
You can run Home Assistant on several types of hardware:
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- Raspberry Pi: Familiar and flexible, but you are responsible for more of the hardware, storage, operating system, and maintenance.
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- Virtual machine or container: Flexible, but better suited to users comfortable with networking, storage, backups, and server administration.
- Existing NAS or server: Possible when the platform supports a suitable Home Assistant installation method.
Green runs Home Assistant, but it does not automatically provide every wireless protocol. You may still need a coordinator or adapter for Zigbee, Thread, or Z-Wave.
Understand how your devices connect
Before buying hardware, identify the exact model and communication method of each device. A product working with Apple Home, Google Home, or Alexa does not automatically guarantee identical support in Home Assistant.
| Connection | What it means | What you may need |
|---|---|---|
| Wi-Fi or Ethernet | Uses your home network. Control may be local or dependent on the manufacturer’s cloud. | The device’s supported integration and reliable network access. |
| Zigbee | Low-power local mesh networking for lights, switches, plugs, buttons, and sensors. | A Zigbee coordinator. Mains-powered devices can often extend the mesh; battery devices generally do not. |
| Z-Wave | Local mesh networking commonly used for locks, switches, and sensors. | A region-compatible Z-Wave controller or adapter. |
| Matter | An application standard that can use Wi-Fi, Ethernet, or Thread. | A Matter controller and the relevant network infrastructure. Matter does not expose every feature identically on every device. |
| Thread | A low-power IP mesh network. It is not the same as Matter. | A Thread network and, for many setups, a Thread border router. |
The Home Assistant Connect ZBT-2 supports Zigbee 3.0 and Thread, but it is dedicated to one of those roles rather than operating as both simultaneously in the same configuration. Its listed MSRP was $49 / €45 when checked on August 18, 2026. The Connect ZWA-2 is a separate Z-Wave adapter, listed at $69 / €59 at that time. These adapters are optional and are not required when an existing compatible hub or controller already works.
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Add smart devices through integrations
Home Assistant connects brands, protocols, hubs, and online services through integrations. Adding an integration may mean authenticating to a manufacturer account, discovering a local device, pairing through a coordinator, or connecting an existing hub.
- Open Settings.
- Go to Devices & services.
- Select Add integration.
- Search for the brand, protocol, or service.
- Follow the authentication, discovery, or pairing instructions.
- Assign the resulting device to an area such as Kitchen, Hallway, or Workshop.
- Rename important devices and entities clearly.
- Confirm that the controls and sensors you need are available.
- Operate the device manually from the dashboard before building an automation.
Labels can change slightly between releases. The official getting-started documentation and the integration’s own page are the best references for your installed version.
Learn the Home Assistant automation model
Trigger → Conditions → Actions- Home Assistant: The central platform that connects devices and runs dashboards, scripts, scenes, and automations.
- Integration: The software connection to a device brand, protocol, hub, or service.
- Device: A physical or logical unit recognized by Home Assistant.
- Entity: A specific capability or piece of information, such as
light.living_room,sensor.outdoor_temperature,binary_sensor.front_door, orclimate.downstairs. - Area: A room or location used to organize devices and simplify automation choices.
- Automation: A rule that responds to an event, state change, schedule, or other trigger.
- Script: A reusable sequence of actions that can be launched by an automation or manually.
- Scene: A predefined collection of device states, such as lights set for movie watching.
- Action: An operation Home Assistant performs, such as turning on a light, sending a notification, or calling a script.
- Blueprint: A reusable automation or script template with configurable inputs.
Every automation needs at least one trigger and one action. Conditions are optional, but they are useful for preventing an automation from running at the wrong time or in the wrong circumstances. Home Assistant documents these concepts in its automation basics and glossary.
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Prepare your installation before creating rules
- Give rooms, devices, and entities consistent names.
- Assign devices to areas.
- Install the official Companion app if you need presence or notifications.
- Check your home location, time zone, and elevation.
- Confirm that devices work from the dashboard.
- Open Settings > Developer tools > States to inspect an entity’s real current state.
- Open Settings > Developer tools > Actions to inspect and test available actions.
Use the actual entity state reported by the integration instead of assuming that every motion sensor, door sensor, or thermostat uses the same labels.
Create your first automation without YAML
This example turns on a hallway light when motion is detected after sunset, waits two minutes, and turns it off.
- Open Settings > Automations & scenes.
- Select Create automation.
- Choose Start with an empty automation, or select a suitable blueprint.
- Give the automation a descriptive name, such as “Hallway light after dark.”
- Add a State or device trigger for the motion sensor. Select the sensor’s real inactive and active states, commonly
offtoon. - Add a sun condition such as after sunset, or use a time condition.
- Add an action to turn on the hallway light.
- Add a delay of two minutes.
- Add a second action to turn off the light.
- Save the automation.
- Trigger the sensor manually and inspect the result.
- If it fails, open the automation trace to see which step was reached or blocked.
The entity IDs in this example are illustrative. Your motion integration may use different states, and the visual editor may generate slightly different YAML in a later release.
Optional YAML equivalent
alias: Hallway light after dark
description: Turn on the hallway light when motion is detected after sunset
triggers:
- trigger: state
entity_id: binary_sensor.hallway_motion
from: "off"
to: "on"
conditions:
- condition: sun
after: sunset
actions:
- action: light.turn_on
target:
entity_id: light.hallway
- delay: "00:02:00"
- action: light.turn_off
target:
entity_id: light.hallway
mode: restartThe visual editor is safer for beginners because it uses capabilities exposed by your installed integrations. YAML becomes useful for templates, advanced branching, and inspecting what the editor created.
Choose the right trigger
Common trigger types include:
- State: An entity changes from one state to another.
- Numeric state: A value crosses a threshold, such as temperature rising above 75°F.
- Time: A rule starts at a particular time.
- Time pattern: A rule repeats at intervals.
- Sun: Sunrise, sunset, or solar elevation.
- Zone or presence: A person enters or leaves a zone.
- Event: A specific Home Assistant event occurs.
- Device: A UI-friendly trigger supplied by an integration.
- Webhook: An external request starts the automation.
- Calendar: An event starts or ends.
- Home Assistant start: Useful for initialization, but it should be used carefully.
A numeric-state trigger normally fires when a value crosses a threshold. It does not repeatedly fire simply because the value remains below or above that threshold. For repeated checking, use suitable time-pattern logic, a state trigger, or separate conditions.
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Conditions are checked when the automation reaches them. If a condition is false at that moment, the automation does not automatically resume when the condition later becomes true.
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Useful conditions include:
- A time range or sun position.
- Whether a person is home.
- Whether a door or window is closed.
- A temperature or other numeric threshold.
- An entity’s current state.
- Whether a device is in a zone.
- Logical and, or, and not combinations.
- A manual-override helper being enabled.
For example, exterior lights might turn on at sunset only if someone is home. Heating might run only when a window sensor is closed. A low-battery notification might be sent only when the battery remains below 20% for a defined period.
Use actions to create useful routines
Actions can turn devices on or off, set brightness or temperature, activate scenes, run scripts, send notifications, play media, wait for time or state changes, repeat steps, choose between branches, modify helpers, or stop an automation.
The editor may offer a device action, an entity action, or a domain-level action such as light.turn_on. A device action is convenient for a particular product. An entity or service/action call is often easier to reuse across several devices.
Put a complicated sequence in a script when several automations need the same behavior. For example, an “Evening arrival” script might set entry lights, adjust the thermostat, and announce a message. Separate automations can call that script when someone arrives, a schedule begins, or a physical button is pressed.
Use blueprints for common automations
Blueprints are reusable templates for automations, scripts, and some other configuration. They are useful for motion lights, button remotes, low-battery alerts, presence-based heating, door notifications, and media controls.
- Open a blueprint from a trusted source.
- Import it into Home Assistant using its provided import method.
- Review the inputs and required devices.
- Create an automation from the blueprint.
- Select your sensor, light, switch, person, or notification target.
- Save it, test it, and find the resulting automation under Settings > Automations & scenes.
Blueprints reduce setup time and YAML, but they can hide logic, expose fewer options, or change when their author updates them. A community blueprint is user-supplied configuration, not the same thing as an official Home Assistant integration. Inspect it before importing it.
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Build presence and notification automations carefully
Presence can be based on person entities, device trackers, GPS through the Companion app, Wi-Fi presence, or combinations of signals. “Alex arrived” is different from “someone is home,” and “everyone left” is different from one person leaving.
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- Turn on entry lighting when a person arrives after sunset.
- Set the thermostat to away only when everyone has left.
- Notify the household when the garage door is open and nobody is home.
- Start a welcome scene once per arrival rather than on every GPS update.
GPS and Wi-Fi presence can fluctuate because of permissions, background restrictions, network changes, or weak signals. Use zones, grace periods, multiple-person logic, and separate arrival, home, and away automations instead of trusting one instantaneous location event.
Reliable notifications require the Companion app or another notification integration, permission to send notifications, and a correct notification target. Include the device and location, avoid alerts for every transient event, and add a cooldown for noisy sensors.
actions:
- action: notify.mobile_app_alex_phone
data:
title: "Front door"
message: "The front door has been open for 5 minutes."The notification action name is device-specific. Replace it with the service shown in your installation.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Test and troubleshoot automations
The device is not discovered
- Check the official integration page and exact model support.
- Confirm the device is not merely supported by another ecosystem.
- Check that it is on the correct network or VLAN.
- Confirm account authentication, pairing mode, and firmware requirements.
- Make sure it is not still paired to another Zigbee, Z-Wave, or Matter controller.
- Check the coordinator, border router, hub, firewall, mDNS, multicast, and IPv6 requirements where relevant.
- Review logs and diagnostics, then pair it again if necessary.
The automation never runs
- Is the automation enabled?
- Is the selected entity correct?
- Does the entity actually change state, or is it merely already in the desired state?
- Does the trigger expect different state labels?
- Is a condition blocking the action?
- Is Home Assistant running at the expected time?
- Is the device unavailable?
Use Developer Tools > States to observe the entity, Developer Tools > Actions to test the response, and the automation trace to follow the trigger, conditions, and actions.
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Motion sensors may change repeatedly, presence may fluctuate, broad event triggers may match more events than intended, or an action may change the same entity that triggered the automation. Narrow the trigger, add a duration or cooldown, use a helper to record state, and choose the automation mode deliberately.
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- Single: New triggers do not start another run while one is active.
- Restart: A new trigger restarts the current run, which is useful when a motion event should restart an off timer.
- Queued: Later runs wait and execute in order.
- Parallel: Multiple runs can execute at the same time.
Modes change concurrency behavior; they do not replace precise triggers and sensible conditions.
Delays behave unexpectedly
A delay holds an automation run. With restart mode, new motion may restart the timer. With single mode, new motion may be ignored. Queued and parallel modes can create multiple delayed runs. For important lighting or safety routines, test repeated triggers rather than checking only one successful run.
A cloud device is unavailable
Home Assistant itself can be running normally while a vendor cloud is down. Local Zigbee, Z-Wave, Matter, Thread, and LAN integrations can often continue during an internet outage, but local operation depends on the particular device, integration, and network. Do not assume that every automation works without internet access.
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Battery devices sleep by design. Temporary unavailability can also result from a weak mesh, poor coordinator placement, interference, low battery, or firmware limitations. Check the battery and network before treating every brief unavailable state as a serious failure.
Make your automations reliable
- Prefer local integrations when outage resilience matters.
- Keep manual controls available for lights, heating, locks, and other important equipment.
- Use clear names and areas so future troubleshooting is straightforward.
- Add delays, cooldowns, and “for” durations to filter brief or repeated events.
- Use manual-override helpers for routines occupants may need to suspend.
- Separate detection logic from complex response logic by using scripts.
- Test after Home Assistant, device firmware, or blueprint updates.
- Keep backups and document critical device pairings.
- For safety-critical equipment, use the device’s own protections rather than relying exclusively on one automation.
Do you need Home Assistant Cloud or extra hardware?
Home Assistant software does not require a subscription. Home Assistant Cloud is optional and provides services such as simplified remote access, Google Assistant and Amazon Alexa integration, and hosted speech services for Assist. It is not required for local automations. Current subscription pricing should be checked on the official service page before purchase.
You may need extra hardware when your devices use a protocol that your installation does not support:
- Use a Zigbee coordinator for Zigbee devices.
- Use a Thread network and border router for Matter-over-Thread devices.
- Use a Matter controller and suitable network transport for Matter devices.
- Use a region-compatible Z-Wave controller for Z-Wave devices.
You do not need to replace every existing hub. A gradual migration is often safer: keep current hubs, add supported devices to Home Assistant, test local control, move selected automations, and retain vendor apps for firmware updates or unsupported features.
Final setup checklist
- Confirm the exact device model and connection method.
- Add the correct integration.
- Assign the device to an area.
- Rename important entities clearly.
- Verify the device works manually.
- Confirm the trigger’s actual state in Developer Tools.
- Test each action independently.
- Check every condition, including time, presence, and override helpers.
- Choose an automation mode that matches the routine.
- Test repeated triggers and device unavailability.
- Review the automation trace.
- Decide whether the routine depends on a vendor cloud.
Home Assistant’s menus and capabilities can change between releases; the official documentation currently displays version 2026.8.2 as of August 18, 2026. Check the documentation for your installed version before relying on a particular label or YAML syntax.
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