August WiFi Smart Lock (4th gen)
Compatibility
| Ecosystem | Support | The catch |
|---|---|---|
| Amazon Alexa | Works | Full support |
| Google Home | Works | Full support |
| Apple Home | Works | HomeKit over WiFi/BT |
| SmartThings | Works | Full support |
| Home Assistant | Partial | — |
Protocols: WIFI · BLUETOOTH
Subscription reality
✓ Works without a subscription: Yes.
Maintenance reality
- Batteries: CR123A x2 — expect roughly 3 months per set
- Cloud dependence: Yes — a server shutdown would degrade or brick this device
- Short battery life is the #1 owner complaint; cloud outage degrades remote control. Interior-only retrofit: it leaves your existing exterior deadbolt and keyway untouched, so your original key is the dead-battery way in. 2xCR123A, user-replaceable, ~3 months (August); the app sends an early low-battery notification before they die.
The catch
3-month battery life and cloud dependence — convenience with a maintenance tax.
Who it's for
Renters: 10-minute install keeping your exterior key; not for the maintenance-averse.
Sources & method
2026-07 web research sweep (docs/02 catalog; primary sources cited there) — registry-and-press research, verified 2026-07-12 · august.com/products/august-wifi-smart-lock ('(2) CR123 batteries', 'up to 3 months', interior-only over your existing deadbolt keeping your keys) + support.august.com early low-battery-notification article (feature confirmed; exact % threshold not stated on the loadable page) — vendor-page research, verified 2026-07-15. 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.