Fingerprint readers used to be the thing that pushed a smart lock past two hundred dollars. The eufy C220 is interesting because it puts one on a deadbolt at roughly half that, with Wi-Fi in the lock so there is no hub to buy either - and then documents its compromises honestly enough that you can decide whether they matter to your door. That last part is rarer than it should be, and it is most of why this lock earns a place on the list.
Five ways in, and why that is the real feature
eufy publishes five unlock methods: a fingerprint, the eufy Security app, the keypad, a physical key and voice control. Capacity is up to 50 fingerprints and 100 passcodes, and the product bullets put a fingerprint unlock at under a second.
The number of methods matters more than any single one of them. A smart lock that only opens to a phone is a lock that still needs a key for everyone else in the house - the child without a phone, the relative who will not install an app, the cleaner who comes on Thursdays. Fifty fingerprints covers every member of a household several times over, and a hundred passcodes is enough to give a code to every tradesperson who will ever visit without reusing one. For a household where several people come and go independently, this capacity is the practical difference between a lock that works and a lock that creates a bottleneck at your phone. Our guide on sharing smart lock access with guests covers how to set that up without ending up with twelve permanent codes you never revoke, and keypad vs fingerprint is the comparison if you are not sure you need both.
Wi-Fi in the lock, with the trade-off that implies
eufy is specific about this and the specificity is useful: the C220 has direct Wi-Fi, and eufy's own FAQ states it does not work with any Wi-Fi bridge or with a eufy HomeBase. So remote lock and unlock, alerts and history work the day you install it, with nothing else bought. For a single-lock household that is the simplest possible purchase - one box, one app, done. Our guide on whether smart locks need a hub covers why that is worth paying attention to.
The cost of built-in Wi-Fi is always battery life, and here it arrives as eight AA cells. That is the most of any lock we cover, and it is the compromise that pays for the convenience: a radio maintaining a connection to your router draws far more power than one waking occasionally to talk to a nearby hub. eufy's published figure is roughly eight months, measured at ten unlocks a day through the keypad or app, with a notification below 20%. A busy family door doing twenty or thirty unlocks a day will not see eight months.
One genuine gap: eufy does not publish the Wi-Fi band. That is worth knowing because a lock on a congested 2.4 GHz network at the far end of a house is the most common reason a smart lock "stops working" remotely while still working perfectly at the door. If your front door is a long way from the router, read smart home WiFi congestion before you decide the lock is faulty, and Bluetooth vs Wi-Fi smart locks lays out what each radio costs you in cells.
BHMA Grade 3 is a real certificate, and that is the point
eufy publishes BHMA Grade 3 for this lock. That deserves emphasis because of how much security copy in this category is written to sound like a certification without being one - locks that "comply with the same standard as" a grade, or that reference a standard without claiming to have been tested to it. Grade 3 is the residential tier of the BHMA scale, so it is not a high-security rating, but it is a third-party grade the product actually holds.
Keep it in proportion. On a residential door, the lock is rarely the weak point: the frame, the strike plate and the glass next to the door usually are. A Grade 3 deadbolt in a solid frame with long strike screws is a reasonable front door. The same deadbolt in a soft frame with three-quarter-inch screws is not, and no grade fixes that. Our are smart locks safe guide covers what actually gets attacked on a home, which is almost never the electronics, and smart lock vs traditional deadbolt explains what the mechanism is doing underneath the app.
IP53 and the question of where your door is
eufy publishes IP53 for the exterior assembly, with an operating range of -22 F to 158 F. Those two figures tell a split story and it is worth separating them.
The temperature range is genuinely good - better documented and wider than most locks publish at any price, which is reassuring if you are in a climate with real winters. The IP53 rating is the modest part: 5 means dust-protected, and 3 means protected against spraying water at an angle up to 60 degrees from vertical. In practice that is a lock for a door with some cover - a porch, a recess, an overhang, a storm door. A fully exposed door facing prevailing weather wants IP65, which is what the Aqara U100 publishes at a similar price.
This is the single most useful thing to check before buying. Stand at your front door in the rain, metaphorically or otherwise: if the lock face gets wet, buy the higher-rated lock. If it is under a porch, IP53 is fine and you keep the money.
No door sensor, so auto-lock is a timer
The C220 has countdown auto-lock and no door sensor, and eufy does not publish the countdown duration. The distinction between a countdown and a sensor is small on paper and occasionally important in practice.
A countdown throws the bolt a set time after it was unlocked, whether or not the door is shut. A door sensor knows the door is closed and locks in response. With a countdown, a door standing open or resting on the latch can get a bolt driven into fresh air, and the app will report the lock as locked. For most households that is a once-a-year annoyance rather than a security problem. If you have children who leave doors ajar, it is worth knowing about - and a lock with a door sensor, like the August with its included DoorSense, is the answer to that specific problem.
The ecosystem ceiling
eufy lists external support as Alexa and Google voice assistant, and its own FAQ lists Apple HomeKit, IFTTT and Matter as not supported yet. "Yet" is eufy's word, not ours, and we are not going to credit a future that has not shipped.
That makes the decision simple. If your house runs on Alexa or Google, this lock fits and voice control works. If your house runs on Apple, this is the wrong lock - you will not see it in the Apple Home app and you will not tap your iPhone to the door. The locks that do that are on our best smart locks for Apple Home list, and smart lock ecosystem compatibility is the full matrix of which lock speaks which platform. If Matter specifically is central to your plans, is Matter worth it is worth reading before it decides a purchase for you.
Fitting it to your door
eufy publishes a door thickness range of 35 mm to 55 mm, a crossbore-center-to-top-of-handleset distance greater than 45 mm, compatibility with most standard US and Canadian deadbolts, and no compatibility with mortise locks. It does not publish a backset figure.
Measure before you order. The thickness and crossbore numbers are easy to check with a tape, and the mortise exclusion rules out a lot of older and apartment doors - if your door has a long rectangular lock body set into the edge of the door rather than a round bolt through a bored hole, this will not fit. Will a smart lock fit my door walks the five measurements that decide it, and how to install a smart lock covers the job itself, which on a standard bored door is a screwdriver and under an hour.
Where it sits in the range
Against the Aqara U100 at a similar price, you are trading ecosystem and weather rating for simplicity: the U100 adds Apple Home Key, IP65 and a longer published battery life on four AA cells, but needs an Aqara hub for anything remote, where the C220's Wi-Fi is built in. Against the Kwikset Halo, you are trading a fingerprint reader and a lower price for Kwikset's Grade AAA certification, SmartKey re-keying and a 250-code keypad - and we put those two head to head in Aqara U100 vs Kwikset Halo, which is the same hub-versus-built-in-Wi-Fi argument one price tier up.
Within the budget tier, the honest competition is a keypad-only lock. If you do not care about fingerprints, you can spend less - but a thumb on a reader is the feature people actually use every day, and it is the reason to pick this lock over a cheaper one. Our best fingerprint smart locks roundup ranks the field, and best budget smart locks covers what else is available at this money.
Who should buy it
Buy it if you want fingerprint entry and hub-free remote access for the least money, your door has some cover from weather, and your house runs on Alexa or Google. Buy it especially for a household where several people need their own way in and you would rather hand out fingerprints and codes than keys - our smart locks for older adults page explains why a fingerprint beats both a phone and a key for some people.
Skip it if you live in Apple Home, if your front door takes weather head-on, if you want the lock to sense the door rather than run a timer, if you need rekeyable keys to match existing hardware, or if eight AA cells in the interior assembly bothers you. We have not tested this lock hands-on: every specification above is eufy's own published figure, read on the date in the sources below, and the price on this page is live from the listing rather than typed in by us.
What actually decides a budget fingerprint lock
One: is the lock face sheltered? This single question decides whether an IP53 lock is a bargain or a mistake. Under a porch, IP53 is fine and the money saved is real. Fully exposed to driving rain, buy IP65 and stop reading spec sheets.
Two: how many people need their own way in? Count them, including the ones without phones. If the answer is more than two, a lock with a fingerprint reader and a generous code limit is worth more than any app feature.
Three: hub or built-in Wi-Fi, and what it costs in cells. Built-in Wi-Fi is the simplest purchase and the shortest battery life. A hub is an extra box that buys you longer batteries and usually better range. Neither is wrong - just read the published battery figure and multiply by how often you will be on a step ladder.
Four: what happens when the batteries die? The three real answers are a physical key in your pocket, an external power port, or an independent keypad. The C220 has the first two. Know which one you are relying on before you need it - see do smart locks work without power.
Five: does it need to be in your ecosystem, or just on your door? A lock that works beautifully in its own app and nowhere else is a perfectly good lock. It only becomes a problem if you were counting on an automation - unlock triggers a light, leaving home locks the door - that needs the lock to appear in Apple Home, Google Home or a Matter network.
