eufy Smart Lock C220 Review (2026): Fingerprint Entry, Built-In Wi-Fi, No Fee

The cheapest fingerprint locks on this site get there by leaving the internet out of the lock. The eufy Smart Lock C220 takes the opposite bet: it is a full deadbolt replacement that builds Wi-Fi directly into the hardware, so remote control, alerts, and guest management work with no hub, no bridge, and, in keeping with eufy's approach across this catalogue, no subscription. It pairs that connectivity with a fingerprint reader, a keypad, and, notably for a biometric lock at this level, a real keyway with two keys in the box.

This review reads the C220 against eufy's published specifications and product documentation. Because this site exists to be honest about recurring costs, the no-hub, no-fee connectivity comes first, then the entry methods, the battery story, and the limits worth knowing before buying.

Built-in Wi-Fi, and what that actually includes

The defining line in the C220's spec sheet is direct, built-in Wi-Fi. The lock joins the home network on its own: there is no hub to buy, and eufy states plainly that it does not work with a HomeBase or any Wi-Fi bridge, because it does not need one. Once connected, the free eufy Security app locks and unlocks the door from anywhere, pushes notifications when the door is used, and manages user profiles, including creating or deleting access for guests.

That is the same architectural choice the Schlage Encode and the ULTRALOQ U-Bolt Pro make on this site, and it is what separates the C220 from the Wyze Lock Bolt, which is Bluetooth-only and can never be reached from away. The difference is in the recurring-cost column: the C220's remote features sit behind no paywall, so the full feature set, remote control included, costs nothing after the hardware.

Fingerprint first, with four other ways in

The everyday interface is the fingerprint reader, and eufy rates recognition at under 0.3 seconds, quick enough that the door opens in the motion of reaching for it. The lock stores up to 50 fingerprints, enough for a whole household plus trusted regulars, and eufy describes the sensor as AI-assisted, meaning it keeps learning a print over repeated uses rather than treating every touch as a first read.

Fingerprint is one of five published entry methods. The keypad holds up to 100 passcodes, so each family member, a cleaner, or a guest can carry a distinct code that the app can revoke at any time. The app itself opens the door remotely, and Alexa and Google Assistant voice control are supported. Finally, and this is rarer than it should be on biometric locks, the C220 keeps a conventional keyway and ships with two physical keys, so a total electronics failure still has a metal answer. Within the eufy ecosystem, the lock also pairs with eufy doorbells, though it does not support Apple HomeKit, IFTTT, or Matter.

Battery, fallbacks, and the emergency port

Power comes from eight AA batteries, included in the box, rated for roughly eight months at a typical ten unlocks a day. The app warns when charge drops under 20 percent, which leaves weeks of margin to replace the cells.

The interesting detail is what happens if that warning gets ignored. On the underside of the exterior assembly sits an emergency power port: press a power bank against it and the lock wakes long enough to accept a fingerprint or code. eufy is explicit about the port's design, it carries no communication circuit, so it can deliver power but cannot transfer data, which closes off the theoretical attack of manipulating the lock through its own charging port. And because the keyway exists, the power bank is the second fallback, not the only one. That is a deeper fallback stack than the keyless Wyze Lock Bolt, which leans on its jump-charge port alone.

Certification, weatherproofing, and the honest limits

The C220 is certified to ANSI/BHMA Grade 3, the standard residential tier for deadbolts, and carries an IP53 rating against dust and sprayed water, with the exterior assembly specified to operate from -22°F to 158°F. Grade 3 is the same tier as most smart deadbolts at this level, but it is worth stating plainly against the catalogue: the ULTRALOQ U-Bolt Pro and the Schlage Encode reach Grade 1, the commercial mark. For a typical front door Grade 3 is the norm rather than a red flag, but a buyer specifically shopping the highest certification should know where this lock sits.

Two more limits deserve the same plainness. First, the auto-lock is a countdown timer that throws the bolt a set delay after unlocking, whether or not the door has actually closed; locks with a real door sensor, like the step-up eufy FamiLock S3 Max, only lock once the door is shut. Second, compatibility: the C220 fits doors 35 to 55 mm thick and is not compatible with mortise locks, so older or non-standard doors need a tape measure before a purchase.

The subscription question

The C220 fits this site's no-fee test cleanly. Every feature described above, remote control, notifications, fingerprint and code management, guest profiles, voice control, lives in the free eufy Security app with no subscription tier behind it, and nothing about the lock's core function degrades without a payment. It is the same no-monthly-fee positioning as the other eufy products in this catalogue, applied to the front door.

Who should buy it

The C220 suits a household that wants fingerprint-speed entry at the door and genuine remote control away from it, without adding a hub to the shopping list or a fee to the calendar. It is a strong fit for a family that wants each member enrolled by fingerprint and each visitor on a revocable code, and for anyone who likes biometric convenience but insists on a physical key in reserve. Buyers already running an eufy doorbell get a small ecosystem bonus on top.

Who should skip it

Apple HomeKit households should skip it, because HomeKit, Matter, and IFTTT are all unsupported; the Schlage Encode Plus is the catalogue's answer there. A buyer set on Grade 1 certification should look at the ULTRALOQ U-Bolt Pro or Schlage Encode instead. Anyone who wants auto-lock tied to a real door sensor, rather than a timer, should consider the eufy FamiLock S3 Max. And doors outside the 35 to 55 mm thickness range, or fitted with mortise locks, are simply incompatible.

How it compares

Against the Wyze Lock Bolt, the C220 is the same budget-fingerprint idea with the remote layer restored: Wi-Fi built in, far more codes, and a physical key the Wyze lacks. Against the ULTRALOQ U-Bolt Pro, it gives up Grade 1 certification and a door sensor but keeps the same hub-free Wi-Fi fingerprint formula. Against the Schlage Encode, it trades the keypad-only approach for faster fingerprint entry and adds a keyway. And within its own family, the eufy FamiLock S3 Max is the flagship with palm-vein entry, a camera, and a door sensor; the C220 is the sensible core of that idea at a fraction of the outlay.

Verdict

The eufy Smart Lock C220 is the rare budget-leaning lock that refuses the usual trade. It keeps the fast fingerprint reader and the keypad, adds built-in Wi-Fi with full remote control and no subscription, and includes the physical keyway that most biometric locks delete. The documented limits are real: Grade 3 rather than Grade 1, a timer-based auto-lock, no Apple or Matter support, and a defined door-thickness window. None of them undercut the core offer. For a household that wants keyless entry it can also reach from anywhere, with every fallback intact and no fee attached, the C220 is one of the most complete specifications in its class.

Frequently asked questions

Does the eufy Smart Lock C220 need a hub?

No. Wi-Fi is built directly into the lock, so it connects to the home network on its own and can be locked, unlocked, and managed remotely from the free eufy Security app. eufy states it does not work with a HomeBase or any Wi-Fi bridge, because none is needed.

Is there a monthly fee?

No. Remote control, notifications, fingerprint and passcode management, guest profiles, and Alexa and Google Assistant voice control all run in the free app with no subscription. There is no paid tier behind any of the lock's features.

What happens if the batteries die?

The eight AA batteries are rated for roughly eight months, and the app warns when charge falls under 20 percent. If they still run flat, an emergency power port on the underside of the exterior assembly accepts a power bank to wake the lock for entry; the port has no data circuit, so it can only deliver power. And because the C220 keeps a conventional keyway, the two included physical keys always work as a final fallback.

How many fingerprints and codes can it store?

The lock stores up to 50 fingerprints, enough for a full household and trusted regulars, and the keypad supports up to 100 different passcodes, each manageable and revocable from the app, including profiles for guests.

Does it work with Apple HomeKit or Matter?

No. eufy states the C220 does not support Apple HomeKit, IFTTT, or Matter. It works with Alexa and Google Assistant, and it pairs with eufy doorbells inside the eufy ecosystem.