August Wi-Fi Smart Lock vs eufy Smart Lock C220
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
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We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
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Use the feature table below to match published specifications to your storage, power, and monitoring requirements. We do not assign an overall score without retained independent test evidence.
August Wi-Fi Smart Lock
August
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Feature comparison
| Feature | August Wi-Fi Smart Lock | eufy Smart Lock C220 |
|---|---|---|
| Installation | Retrofit over an existing single-cylinder deadbolt, interior side, under 10 minutes | — |
| Connectivity | Built-in Wi-Fi (802.11 b/g/n, 2.4 or 5 GHz) plus Bluetooth, no bridge required | Built-in Wi-Fi, no hub or bridge required |
| Door status | DoorSense sensor reports whether the door is open or securely closed | — |
| Smart home | Works with Alexa, Google Assistant, and Siri; phone or Apple Watch acts as key | — |
| Power | 2 CR123 batteries, included in the box | 8 AA batteries (included), about 8 months, emergency power port with no data circuit |
| Dimensions | 72 mm diameter, 46 mm depth | — |
| Certification | Not ANSI/BHMA certified — mounts on an existing certified deadbolt (per August warranty page) | ANSI/BHMA Grade 3, IP53 weather resistance |
| Entry methods | August app (iOS/Android), Apple Watch, existing physical key, optional keypad (sold separately), Alexa/Google Assistant/Siri voice, Auto-Unlock | Fingerprint, keypad code, app, voice control, physical key (2 included) |
| Key backup | Retrofit keeps the existing exterior cylinder — original keys still work | 2 physical keys included |
| Warranty | 1-year limited hardware warranty | 18 months (36 months for mechanical parts) |
| Fingerprint | — | AI fingerprint recognition in under 0.3 seconds, stores up to 50 fingerprints |
| Codes | — | Up to 100 passcodes, guest profiles managed in the app |
| Door compatibility | — | Door thickness 35–55 mm; crossbore center to top of handleset >45 mm; not compatible with mortise locks |