August Wi-Fi Smart Lock vs eufy FamiLock S3 Max
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
How we evaluate products
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 We do not present unpublished laboratory or in-home measurements as our own testing.
Features and services can change, so confirm current details with the manufacturer before buying. Affiliate commissions do not determine our editorial criteria.
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
Check Amazon for the current price
eufy FamiLock S3 Max
eufy
Check Amazon for the current price
Feature comparison
| Feature | August Wi-Fi Smart Lock | eufy FamiLock S3 Max |
|---|---|---|
| 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 (direct), Matter, Apple Home, Alexa, Google Home, SmartThings |
| 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 | 15,000 mAh rechargeable pack + 4 AAA backup, up to 5 months, 5V/2A charging |
| Dimensions | 72 mm diameter, 46 mm depth | — |
| Unlock methods | — | Palm vein, app, voice control, keypad password, physical key |
| Camera | — | 2K HDR, 150° x 150° view (180° diagonal), night vision |
| Display | — | 4-inch interior screen, 1080p |
| Security certification | — | ANSI/BHMA Grade 1, IP65 (-22°F to 158°F) |