Smart locks have moved well beyond the “tap your phone and hope the door opens” stage. The better ones now feel less like gadgets bolted to a door and more like practical upgrades for everyday home security. eufy has been leaning into that idea with a growing lineup of deadbolt-style smart locks, and The Home Depot currently carries several options aimed at different households, budgets, and comfort levels with smart home tech.
The three models worth comparing are the eufy FamiLock E40, eufy FamiLock E35, and eufy FamiLock E32. They share a similar mission: replace a traditional deadbolt with a connected lock that offers easier access, smarter control, and fewer “where did I put the key?” moments.
The differences come down to how you want to unlock the door, how much smart home integration matters, and whether you want the lock to double as part of your front-door security setup.
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eufy FamiLock E40: The All-in-One Front Door Upgrade
The FamiLock E40 is the most feature-rich of the three and the one that feels closest to a full front-door security hub. It combines a smart lock, 2K camera, and video doorbell into one unit, giving homeowners a single device that can handle access control and front porch visibility.
Its headline feature is facial recognition, which is designed to let approved users unlock the door without reaching for a phone, key, or code. That makes it especially appealing for families, busy households, and anyone who regularly walks up to the door with bags, groceries, sports gear, or one hand occupied by a coffee that has become load-bearing.
The built-in 2K camera and video doorbell are equally important here. Instead of buying a smart lock and a separate video doorbell, the E40 wraps both into one package. That can simplify the front door area, reduce device clutter, and make the setup feel more cohesive. Built-in Wi-Fi also means the lock can be controlled remotely without needing a separate bridge, which is useful for checking lock status, letting someone in, or managing access when away from home.
The E40 is the best fit for homeowners who want one device to do several jobs. It makes sense for families, frequent delivery households, Airbnb or guest-room hosts, and anyone who has been thinking about adding both a smart lock and a doorbell camera. It is also the most natural pick for someone already invested in eufy security products.
The tradeoff is price and complexity. At around $299.99 at The Home Depot, it is not the budget choice, and its camera/doorbell features may be more than some people need. For a front door that already has a capable video doorbell, the E40 could feel redundant. For a clean-slate entry upgrade, though, it is the most complete option in this trio.
eufy FamiLock E35: Palm Scan Convenience Without the Camera
The FamiLock E35 is the interesting middle ground. It skips the camera and doorbell features of the E40 but keeps the premium biometric angle with palm vein recognition. Rather than using a fingerprint or face scan, the E35 reads the vein pattern in a user’s palm for keyless entry.
That gives it a different personality. It is not trying to be a front porch camera system. It is focused more directly on secure, convenient access. For households that do not want a camera on the lock, or already have a separate video doorbell they like, the E35 may be the cleaner choice.
eufy positions the E35’s palm vein tech as a more secure biometric option, and it is designed for quick, touchless access. That can be useful for families with kids, multigenerational homes, or anyone who does not want to manage physical keys or constantly share PIN codes. Palm scanning also avoids some of the friction that can come with fingerprint readers when hands are wet, dirty, or slightly misaligned.
Another strong point is its power system. The E35 uses a dual power setup with a high-capacity rechargeable battery and a backup battery built in. That design is meant to keep the lock operating even when the main battery needs attention, which is exactly the sort of boring-sounding feature that becomes very exciting the moment a smart lock decides to be dramatic.
The E35 supports Matter and Apple Home, and it also works through the eufy app. Built-in Wi-Fi allows remote control without a separate bridge, making it more flexible for connected homes.
The E35 is best for homeowners who want a higher-end smart lock but do not need a camera built into the door hardware. It is a strong match for tech-forward households, Apple Home users, smart home tinkerers, and people who like the idea of biometric access but prefer something a little different from the usual fingerprint reader.
At around $249.99, it is somewhat of the same price neighborhood as the E40, which potentially makes the decision more about priorities than savings. Choose the E40 for camera and doorbell functions. Choose the E35 for palm-based access and a cleaner lock-only setup.
eufy FamiLock E32: The Practical Value Pick
The FamiLock E32 is the most affordable of the three and probably the easiest recommendation for people who simply want a smart deadbolt without overcomplicating the front door.
At around $139.99 at The Home Depot, the E32 costs significantly less than the E40 and E35 while still offering fingerprint entry, Matter support, and Apple Home compatibility. It is the sensible “I want this to work and not become a weekend research project” model.
The fingerprint reader is the main convenience feature. For most households, that is still one of the fastest and most familiar ways to use a smart lock. It is great for family members, trusted neighbors, dog walkers, or anyone who needs reliable access without carrying a key. It also keeps the exterior experience simple: walk up, tap a finger, unlock the door.
Battery life is another practical note. The E32 is listed with up to eight months of battery performance using 8 AA batteries. That may appeal to buyers who prefer replaceable batteries over rechargeable packs, especially for rental properties, garages, side entries, or homes where keeping a spare set of AAs in a drawer is easier than remembering to recharge another device.
The E32 is the best fit for first-time smart lock buyers, budget-minded homeowners, renters with permission to swap hardware, and anyone looking to add keyless entry to a secondary door. It may also be the best choice for people who do not want a camera, do not need palm recognition, and do not want to pay for features they will rarely use.
It is not as advanced as the E40 or E35, and it lacks the more futuristic biometric approach of those models. To us, that is also part of its charm.
How the Three Compare
The easiest way to separate these locks is by thinking about the door itself.
For the main front door, the E40 makes the strongest case because it handles the lock, camera, and doorbell in one unit. It is especially appealing for homes that do not already have a video doorbell or for anyone who wants one app-centered view of who is at the door and whether the door is locked.
For a front door that already has a camera, the E35 may make more sense. It offers premium access control without duplicating video features. Palm vein recognition gives it a more advanced feel than a standard keypad or fingerprint lock, and the dual power system adds reassurance for daily use.
For side doors, garage entry doors, rentals, or budget-conscious upgrades, the E32 is the obvious value pick. It covers the basics well: fingerprint entry, smart home compatibility, and long battery life without pushing into premium pricing.
Smart home users should also pay attention to Matter support. All three models are positioned for more flexible smart home control, which matters for households mixing Apple Home, Google Home, Alexa, SmartThings, or the eufy app. That said, camera and doorbell features may still be most fully managed through eufy’s own ecosystem, so buyers should think of Matter primarily as a smart lock control benefit rather than a guarantee that every feature appears identically across every smart home platform.
Which eufy Smart Lock Should You Buy?
The eufy FamiLock E40 is the best choice for someone who wants the most complete front-door upgrade. It brings smart access, facial recognition, a 2K camera, and a video doorbell into one device. It is the premium “do it all at the door” pick.
The eufy FamiLock E35 is the best choice for someone who wants high-end biometric unlocking without adding another camera. Its palm scan feature, built-in Wi-Fi, Matter support, Apple Home compatibility, and dual power system make it a strong fit for smart homes that already have security cameras covered.
The eufy FamiLock E32 is the best choice for most budget-minded buyers. It delivers fingerprint entry and smart home support at a much lower price, making it easier to recommend for everyday keyless access.
For many households, the decision will come down to how much intelligence they want at the door. The E32 gets you smart access. The E35 makes that access feel more advanced. The E40 turns the lock into a full front-door command center.
Home Depot’s eufy lineup gives shoppers a fairly straightforward ladder to climb: start with fingerprint convenience, step up to palm-based biometrics, or go all in with facial recognition and built-in video. Not every door needs the big-brain deadbolt treatment, but for the right entryway, these locks can make coming and going feel a lot smoother.
