Compatible with:

Smart Lock S230, Smart Lock E130, Smart Lock C100, Smart Lock C210, Smart Lock C220, Video Smart Lock E330

Yes. 

 When the built-in sensor of eufy smart lock detects that your door is in a fixed closed position, it will trigger Smart Lock to automatically lock your door. You can set a time period for the Auto-Lock function. But it does not offer an auto-unlock feature to unlock the door when it sees that you've come home based on your phone's location data.

Here are steps to enable it in eufy App: Click the Setting button in the smart lock device tab > Lock Settings > Auto Lock > Enable the Auto-lock. 

Learn more about Auto-Lock Function on eufy Smart Locks.