Eufy FamiLock S3 Max vs Nuki Smart Lock Ultra

Eufy FamiLock S3 Max wins with its lower price, IP65 build, integrated doorbell and camera, palm entry and guest passwords. Nuki Smart Lock Ultra counters with a higher rating, 2-year warranty, longer battery life and premium retrofit engineering.

Philosophy. The Eufy consolidates lock, doorbell, camera and peephole into one exterior unit for standard doors. The Ultra is a sleek interior motor over a European cylinder, fast and discreet, with keypad and fingerprint as accessories and no video features.

The Nuki Smart Lock Ultra, which owners call Nuki's best lock yet with only minor install quirks. The Eufy FamiLock S3 Max rates well too, though some owners hit Wi-Fi instability, Matter errors or support frustrations.

The Eufy FamiLock S3 Max: palm-vein recognition, keypad codes, app and key. The Nuki Smart Lock Ultra: phone, watch and geolocation auto-unlock out of the box, with keypad or fingerprint entry via optional accessories.

Choose Eufy FamiLock S3 Max for one device that locks, watches and answers the door: palm unlock, 2K video without fees, rear screen and IP65 sealing, at the lower price.

Choose Nuki Smart Lock Ultra for the finest Euro-cylinder retrofit: fastest motor, most compact body, built-in Wi-Fi, Matter and a 2-year warranty, with the better owner rating of the pair.