The eufy Smart Lock E40 is a 2K video deadbolt with on-device facial unlock. eufy’s official page showed local storage for up to 50 faces and 32 GB local storage. It fits most standard US and Canadian single-cylinder deadbolts 35–55 mm thick.

It is not for mortise locks or round or non-standard faceplates. Camera streams are not supported via Matter. The eufy app is required for full features.

Pros
– A 2K video deadbolt with on-device facial unlock, local face storage for up to 50 faces, and 32 GB local storage
– It fits most standard US and Canadian single-cylinder deadbolts 35–55 mm thick

Cons
– It is not for mortise locks or round or non-standard faceplates
– Camera streams are not supported via Matter, and the eufy app is required for full features

eufy Smart Lock E40

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Where to buy (prices as of 2026-08-24)

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