Aqara Smart Lock U200 vs Eufy Smart Lock C220

The Aqara Smart Lock U200 wins overall for versatility: it supports more smart-home platforms (Apple HomeKit, Google Home, Alexa, SmartThings, Home Assistant, IFTTT and Matter over Thread) and more entry methods, and it is a retrofit that keeps your existing key. The Eufy Smart Lock C220 is the better pick if you want a hub-free lock with built-in Wi-Fi, a higher owner rating and longer battery life, but it covers only Google Home, Alexa and Home Assistant.

Connectivity and compatibility. The Aqara Smart Lock U200 uses Matter over Thread and works with nearly every major ecosystem, but needs a Thread border router for remote access. The Eufy Smart Lock C220 has built-in 2.4 GHz Wi-Fi, so remote control works with no extra hub, but it is limited to Google Home, Alexa and Home Assistant, with no HomeKit or Matter.

The Aqara Smart Lock U200 needs a Thread border router (such as a compatible Apple, Google or SmartThings hub) for remote control and full smart-home features; without one you are limited to Bluetooth at the door. The Eufy Smart Lock C220 has built-in Wi-Fi and needs no hub for remote access.

The Aqara Smart Lock U200 does. It adds fingerprint, passcode, NFC, Bluetooth, Apple Home Key, the app and a physical key. The Eufy Smart Lock C220 offers fingerprint, passcode, Apple Home Key, remote app control and a physical key, but no NFC or Bluetooth unlocking.

Choose the Eufy Smart Lock C220 if you want an affordable, hub-free deadbolt with reliable fingerprint entry and built-in Wi-Fi, and you live in a Google Home, Alexa or Home Assistant household. It carries a higher owner rating than the Aqara Smart Lock U200 and runs roughly 8 months on its AA batteries, but it will not suit Apple HomeKit or Matter users.