Compatibility at a glance
Choose your platform to see its setup and functions. Your choice carries across product pages.
A connection can work while individual controls or automations remain unconfirmed. Read the connection details ↓
Protocols: WIFI · BLUETOOTH[1][4][23][27][29]
Before you buy
No bridge, and that is the 4th generation's whole point — the radio moved into the lock. August states it plainly: 'the August Wi-Fi Smart Lock requires no additional bridge to connect. Wi-Fi capability is built right into the smart lock.' Home Assistant's own documentation agrees from the other side, listing the Gen 4 among the devices that do not require a Connect Bridge or Doorbell. Worth knowing if you are comparing against the older Smart Lock + Connect, which does need one. The lock's Wi-Fi is unusually flexible for this category: 802.11 b/g/n on 2.4GHz OR 5GHz, where most smart locks are 2.4GHz-only.[4][23][27]
Follow the recorded connection below. Equipment details and setup limits explain what else this path needs.
August WiFi Smart Lock (4th gen)
What you gainUse the recorded platform connection.
Keep in mindIntermediate equipment and transport are not mapped in this summary. Read the setup notes before choosing hardware. Check the function table for supported controls and routines. A connection diagram does not establish every function or remote access.
This shows the connection route, not every network cable or a shopping list. One device may provide several roles, including a Matter controller and a Thread border router. Only a Thread connection needs the Thread role. Read the equipment cards for all recorded requirements.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
HomeKit is genuinely native on the 4th gen (WiFi/Bluetooth in the lock, no bridge). Remote Siri/Home-app control away from home needs an Apple home hub (HomePod or Apple TV). No Matter support — August's own compatibility pages list no Matter or Thread anywhere (re-checked 2026-08-07, still absent).[10][34]
The equipment list for this platform is not fully specified here. Use the documented setup above; an empty list does not mean no equipment is needed.
Follow the recorded connection below. Equipment details and setup limits explain what else this path needs.
August WiFi Smart Lock (4th gen)
What you gainReach the device through the documented cloud connection.
Keep in mindCheck the function table for supported controls and routines. A connection diagram does not establish every function or remote access.
This shows the connection route, not every network cable or a shopping list. One device may provide several roles, including a Matter controller and a Thread border router. Only a Thread connection needs the Thread role. Read the equipment cards for all recorded requirements.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Cloud-to-cloud Works-with-Google-Home linking using the lock's built-in WiFi. Voice unlock works but Google requires a spoken security PIN for any voice unlock — a Google platform rule for locks, not stated on August's page.[9][33]
The equipment list for this platform is not fully specified here. Use the documented setup above; an empty list does not mean no equipment is needed.
Follow the recorded connection below. Equipment details and setup limits explain what else this path needs.
August WiFi Smart Lock (4th gen)
What you gainReach the device through the documented cloud connection.
Keep in mindCheck the function table for supported controls and routines. A connection diagram does not establish every function or remote access.
This shows the connection route, not every network cable or a shopping list. One device may provide several roles, including a Matter controller and a Thread border router. Only a Thread connection needs the Thread role. Read the equipment cards for all recorded requirements.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Cloud-to-cloud via the August Alexa skill using the lock's built-in WiFi — lock and status by voice anytime, but voice UNLOCK requires a 4–12 digit PIN configured during skill account linking; no PIN set, no voice unlock.[8][32]
The equipment list for this platform is not fully specified here. Use the documented setup above; an empty list does not mean no equipment is needed.
Follow the recorded connection below. Equipment details and setup limits explain what else this path needs.
August WiFi Smart Lock (4th gen)
What you gainUse the recorded platform connection.
Keep in mindIntermediate equipment and transport are not mapped in this summary. Read the setup notes before choosing hardware. Check the function table for supported controls and routines. A connection diagram does not establish every function or remote access.
This shows the connection route, not every network cable or a shopping list. One device may provide several roles, including a Matter controller and a Thread border router. Only a Thread connection needs the Thread role. Read the equipment cards for all recorded requirements.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Official cloud-to-cloud linked service — SmartThings talks to August's cloud, so it needs the lock's WiFi online and there is no local execution; no SmartThings hub required.[11][35]
The equipment list for this platform is not fully specified here. Use the documented setup above; an empty list does not mean no equipment is needed.
Follow the documented setup. Read the equipment details and connection limits below.
August WiFi Smart Lock (4th gen)
What you gainReach the device through the documented account connection.
Keep in mindInternet and the vendor account are required. Check which functions this route exposes.
Check the function table and setup notes for this route. An alternative connection does not inherit every capability of the recorded primary connection. A Thread border router, a Matter controller and a platform home hub are different roles; suitable hardware may provide more than one.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Official integration built into Home Assistant (since version 0.64, with updates pushed from August's cloud) covering lock/unlock, DoorSense door state, battery, and who operated the lock — but it depends entirely on the August/Yale cloud (there is no local control), some data updates slowly because August offers no instant-update feed for it, and Home Assistant's docs flag battery reporting on the Gen-4 lock as frequently inaccurate.[12][24][30]
One device can provide more than one role. These are setup requirements, not a shopping list of separate purchases.
What could you do with this?
Start with a documented control or event. The selected connection shows what is confirmed for that platform.
Apple Home · Works
This device supports lock/unlock.
Setup: See the equipment information above.
HomeKit is genuinely native on the 4th gen (WiFi/Bluetooth in the lock, no bridge). Remote Siri/Home-app control away from home needs an Apple home hub (HomePod or Apple TV). No Matter support — August's own compatibility pages list no Matter or Thread anywhere (re-checked 2026-08-07, still absent).
Connection documentation: [10] [34]
Device documentation: [9] [33]
august.com · checked 2026-09-27
august.com · checked 2026-09-27
Google Home · Works
This device supports lock/unlock.
Setup: See the equipment information above.
Cloud-to-cloud Works-with-Google-Home linking using the lock's built-in WiFi. Voice unlock works but Google requires a spoken security PIN for any voice unlock — a Google platform rule for locks, not stated on August's page.
Connection documentation: [9] [33]
Device documentation: [9] [33]
august.com · checked 2026-09-27
Alexa · Works
This device supports lock/unlock.
Setup: See the equipment information above.
Cloud-to-cloud via the August Alexa skill using the lock's built-in WiFi — lock and status by voice anytime, but voice UNLOCK requires a 4–12 digit PIN configured during skill account linking; no PIN set, no voice unlock.
Connection documentation: [8] [32]
Device documentation: [9] [33]
august.com · checked 2026-09-27
august.com · checked 2026-09-27
SmartThings · Works
This device supports lock/unlock.
Setup: See the equipment information above.
Official cloud-to-cloud linked service — SmartThings talks to August's cloud, so it needs the lock's WiFi online and there is no local execution; no SmartThings hub required.
Connection documentation: [11] [35]
Device documentation: [9] [33]
august.com · checked 2026-09-27
august.com · checked 2026-09-27
Home Assistant · Works
This device supports lock/unlock.
Setup: See the equipment information above.
Official integration built into Home Assistant (since version 0.64, with updates pushed from August's cloud) covering lock/unlock, DoorSense door state, battery, and who operated the lock — but it depends entirely on the August/Yale cloud (there is no local control), some data updates slowly because August offers no instant-update feed for it, and Home Assistant's docs flag battery reporting on the Gen-4 lock as frequently inaccurate.
Connection documentation: [12] [24] [30]
Device documentation: [9] [33]
august.com · checked 2026-09-27
home-assistant.io · checked 2026-09-27
A documented control or event is one part of a setup. It does not by itself establish a complete automation.
A platform connection does not confirm every function. Controls and reported events are shown separately from what an automation can use.
Compare all five platforms. On a narrow screen, scroll the table sideways.
| Device function | Apple HomeWorks[10][34] | Google HomeWorks[9][33] | AlexaWorks[8][32] | SmartThingsWorks[11][35] | Home AssistantWorks[12][24][30] |
|---|---|---|---|---|---|
| Lock/unlockDevice control | Control Not stated | Control Not stated | Control Not stated | Control Not stated | Control Not stated |
| Lock stateReported event | Event Not stated | Event Not stated | Event Not stated | Event Not stated | Event Not stated |
Automation availability for this model is not established.
✓ Documented for this connection. × A stated limit. ◐ A partial function. ? Not established. A listed device function does not establish a complete routine, its other equipment or any plan requirements.
HomeKit is genuinely native on the 4th gen (WiFi/Bluetooth in the lock, no bridge). Remote Siri/Home-app control away from home needs an Apple home hub (HomePod or Apple TV). No Matter support — August's own compatibility pages list no Matter or Thread anywhere (re-checked 2026-08-07, still absent).[10][34]
Cloud-to-cloud Works-with-Google-Home linking using the lock's built-in WiFi. Voice unlock works but Google requires a spoken security PIN for any voice unlock — a Google platform rule for locks, not stated on August's page.[9][33]
Cloud-to-cloud via the August Alexa skill using the lock's built-in WiFi — lock and status by voice anytime, but voice UNLOCK requires a 4–12 digit PIN configured during skill account linking; no PIN set, no voice unlock.[8][32]
Official cloud-to-cloud linked service — SmartThings talks to August's cloud, so it needs the lock's WiFi online and there is no local execution; no SmartThings hub required.[11][35]
Official integration built into Home Assistant (since version 0.64, with updates pushed from August's cloud) covering lock/unlock, DoorSense door state, battery, and who operated the lock — but it depends entirely on the August/Yale cloud (there is no local control), some data updates slowly because August offers no instant-update feed for it, and Home Assistant's docs flag battery reporting on the Gen-4 lock as frequently inaccurate.[12][24][30]
Platform documentation:
august.com · checked 2026-09-27
august.com · checked 2026-09-27
august.com · checked 2026-09-27
august.com · checked 2026-09-27
home-assistant.io · checked 2026-09-27
Listed device functions are established from vendor documentation. An ability missing here is unestablished, not necessarily absent.
| Ecosystem | Support | The catch |
|---|---|---|
| Amazon Alexa | WorksWorks with this ecosystem[8][32] | Cloud-to-cloud via the August Alexa skill using the lock's built-in WiFi — lock and status by voice anytime, but voice UNLOCK requires a 4–12 digit PIN configured during skill account linking; no PIN set, no voice unlock. |
| Google Home | WorksWorks with this ecosystem[9][33] | Cloud-to-cloud Works-with-Google-Home linking using the lock's built-in WiFi. Voice unlock works but Google requires a spoken security PIN for any voice unlock — a Google platform rule for locks, not stated on August's page. |
| Apple Home | WorksWorks with this ecosystem[10][34] | HomeKit is genuinely native on the 4th gen (WiFi/Bluetooth in the lock, no bridge). Remote Siri/Home-app control away from home needs an Apple home hub (HomePod or Apple TV). No Matter support — August's own compatibility pages list no Matter or Thread anywhere (re-checked 2026-08-07, still absent). |
| SmartThings | WorksWorks with this ecosystem[11][35] | Official cloud-to-cloud linked service — SmartThings talks to August's cloud, so it needs the lock's WiFi online and there is no local execution; no SmartThings hub required. |
| Home Assistant | WorksWorks with this ecosystem[12][24][30] | Official integration built into Home Assistant (since version 0.64, with updates pushed from August's cloud) covering lock/unlock, DoorSense door state, battery, and who operated the lock — but it depends entirely on the August/Yale cloud (there is no local control), some data updates slowly because August offers no instant-update feed for it, and Home Assistant's docs flag battery reporting on the Gen-4 lock as frequently inaccurate. |
✓ Works without a subscription: Yes.
Vendor account required: Not established — we have not sourced this yet.
August publishes no security-update support date for this model. That is a gap in what the manufacturer has published, not evidence either way — some makers declare a support period and some say nothing at all.
Verified absence. Yale and August document HOW firmware updates happen — updates are released periodically to improve connection speed, reliability, motor controls and Auto-Lock, and begin automatically when the lock owner connects over Bluetooth — and nowhere state for how long they will keep coming. A cadence is not a commitment: knowing that updates arrive periodically tells a buyer nothing about the horizon, which on a door lock is the question that matters. Recorded as a checked absence rather than an unchecked cell.
3-month battery life and cloud dependence — convenience with a maintenance tax.
Renters: 10-minute install keeping your exterior key; not for the maintenance-averse.
This opens August's own website. We earn nothing from this link.
Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →
Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.
Your platform, exact hub and the functions you need determine the answer. A Setup Check researches how they fit together.