eufy Security Smart Lock C220 Deadbolt, Fingerprint, Wi-Fi, Nickel

What matters most

For households that want keyless entry plus remote access, the eufy Security Smart Lock C220 combines a fingerprint reader, keypad, app control, and built-in Wi-Fi in a nickel-finish deadbolt. Its six unlocking options also include a physical key, Apple Watch, and voice control with Alexa or Google Assistant, giving household members different ways to enter.

The fingerprint sensor uses self-learning recognition, while the eufy Security app supports access management, real-time notifications, and event history. Built-in Wi-Fi allows remote control without a separate bridge. How useful is that when you want to check or manage the lock while away? It puts everyday access tools and lock activity in one app.

The C220 also includes an auto-lock function, an IP53-rated exterior assembly, and BHMA Grade 3. It runs on eight AA batteries, with an estimated battery life of up to eight months depending on use. Compared with a basic keyed deadbolt or a keypad-only approach, it adds app access, fingerprint entry, and multiple ways to unlock while retaining a physical key option.

Getting the most from it

The lock is designed for most standard US and Canadian deadbolts, with installation described as a no-drill process. For a practical fit check, the door should be 35 mm–55 mm thick, and the distance from the center of the crossbore to the top of the handleset should be greater than 45 mm. It is not compatible with mortise locks. These measurements help confirm that the existing door setup suits the lock before installation.

Choose an access method that works for each person using the door: fingerprints for quick entry, a passcode for keypad access, or app control for managing access remotely. The physical key offers another entry method. Battery life varies with how often the lock is used, and the app can provide a low-battery notification.

Who it’s for

This deadbolt suits people who want to manage entry at a front, apartment, office, or other entry door without relying on a single key. It can also fit into an existing eufy setup: the lock can be added to routines with a eufy doorbell through the eufy Security app. Alexa and Google Assistant voice control offer another way to operate it.

Buyer feedback often highlights straightforward installation, fast fingerprint access, and the choice of entry methods. Experiences with fingerprint recognition, Wi-Fi connection, reliability, and battery life are mixed, so the app, keypad, and physical key provide useful alternatives within the same lock. A solid pick if you want connected access options alongside a conventional deadbolt format.

Before you decide

How can you unlock the C220? You can use fingerprint recognition, the eufy Security app, the keypad, a physical key, Apple Watch, or voice control with Alexa or Google Assistant.

How long do the batteries last? The lock uses eight AA batteries and is rated for roughly eight months of use. Actual life depends on how frequently the lock is operated, the app can send a low-battery notification.

Will it fit your door? It is compatible with most standard US and Canadian deadbolts. The door thickness should be 35 mm–55 mm, and the crossbore center should be more than 45 mm from the top of the handleset. It is not compatible with a mortise lock.

Should you buy it?

Choose the C220 if your priority is flexible, connected entry without giving up a physical key. Fingerprint, keypad, app, and voice options make it useful for shared access, while built-in Wi-Fi and eufy app notifications support remote management. Its standard-deadbolt format makes it a practical match for a compatible front or entry door.