A video lock is a motorized deadbolt and a doorbell camera welded into one object, sharing one battery and one hole in your door. Lockly and eufy are the two brands that take the category seriously, and the ordinary way this site decides a comparison — what the subscription costs over five years — is unavailable here, because neither brand charges one for basic recording. So the decision moves to two more practical questions: who supplies the storage, and who feeds the thing.
The head-to-head
Compiled from manufacturer specifications, October 2026. Battery figures are the makers' own published ratings in regular use, not measurements of ours. Prices come live on this page from the Amazon API and are stamped as of October 15, 2026. | Lockly Vision Zeno | Lockly Vision | eufy E330 | eufy S330 |
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| Camera | 2K | Full HD | 2K, f/1.6 | 2K (2560x1920) |
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| Storage | 32GB card included | TF card included | 8GB built into the lock | SD card, not included |
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| Power | 2x 10000mAh packs | 8x AA | 1x 10000mAh pack | 1x 10000mAh pack |
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| Maker's battery rating | Up to 8 months | Up to 12 months | ~3 months | ~3 months |
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| Indoor chime in the box | No | No | No | Yes |
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| Extra box on a socket | Yes, Vision Connect hub | Yes, hub included | No | No |
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| Weather rating | Published IP65 | IP54 | IP65 | IP65 |
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| Auto-lock trigger | Timer | Timer | Timer | Real door sensor |
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| Apple Home Key | Yes | No | No | No |
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Who supplies the storage
This is the cleanest difference between the two brands and the one that catches buyers out. eufy's E330 has 8GB of storage soldered into the lock body: nothing has to be bought, powered or paired before it records, and there is no card to lose or corrupt. Lockly ships a card in the box on both models, which is also a complete answer on day one — but a card is a consumable, and a card slot is a moving part on a door that gets slammed.
The exception runs the other way and is worth knowing: eufy's own S330 does notinclude an SD card, so out of the box it streams and alerts but records nothing until you buy one. That is the opposite of what people assume from the brand, and it is the single most common disappointment in this category. Both brands scale up — eufy via a HomeBase 3 it documents as expandable local storage up to 16TB, Lockly via its optional paid LocklyOS tier for extended storage, which is the one place a subscription appears on either side.
Who feeds it
A video lock has a camera on a battery, and that is a hard engineering problem rather than a marketing one. The two brands answer it differently and the gap is large.
eufy uses a single 10000mAh rechargeable pack rated around three months. That is roughly four recharge events a year: you take the pack off the door, plug it in, and put it back. Lockly's Vision Zeno ships two 10000mAh packs rated up to eight months each, so you swap rather than wait, and the plain Lockly Vision takes eight AA cells that Lockly rates up to twelve months — one battery event a year, and the cells are available in every shop in the country.
If the door is at a holiday let, a rental you manage, or a parent's house an hour away, twelve months on AAs is not a convenience, it is the difference between a workable lock and a thing that goes flat while nobody is watching. The general battery arithmetic for locks — and why a camera changes it so much — is in our smart lock battery guide.
The hub, and why eufy wins on simplicity
Lockly's locks have no built-in Wi-Fi. Both Vision models rely on a bundled hub powered indoors within range of the door — it is in the box, so it is not an extra purchase, but it is an extra device on a socket and one more thing that can be unplugged by somebody tidying up. eufy's E330 and S330 need nothing beyond the lock.
For most households that is the deciding practical fact, and it is why we rank the eufy E330 as the one most people should buy on our video lock roundup even though Lockly's Zeno tops the specifications there. One object on the door, no card, no base station, nothing on a socket.
Two things only one side does
eufy S330: the chime.It is the only lock in this comparison that rings a bell inside the house, and the chime doubles as where the footage is stored — so the thing that makes the noise is the thing that keeps the recording. Every other lock here means phone alerts only, which is a genuine downgrade from a doorbell if anyone in the household does not carry a phone around the house. It also drives auto-lock from a real door sensor rather than a countdown, so the bolt only throws into a door that is actually closed. On the timer-driven locks, including eufy's own E330, a countdown will drive the bolt into a door standing ajar — which on a misaligned frame means a jammed bolt and a flat battery.
Lockly Vision Zeno: Apple Home Key and PIN Genie. Home Key means an iPhone or Apple Watch tap opens the door with no app, which nothing on the eufy side offers; the case for it is made in our Apple Home Key roundup. PIN Genie reshuffles the digit positions on the keypad on every use, so a smudge pattern or a shoulder-surfer learns nothing — on a shared entrance or a short-term rental that is a real security property rather than a feature-list item, and it is the strongest reason on this page to pay Lockly's premium.
The weather line nobody reads
Three of these four locks publish IP65. The plain Lockly Vision publishes IP54, which is splash resistance rather than the driving-rain rating the others carry. On a door with a deep porch that distinction is academic. On an exposed entrance facing the prevailing weather it is not, and a camera module is the wrong place to find out what the difference means. What the ratings actually mean, digit by digit, is in our guide to outdoor-rated locks.
What they have in common, and it matters
Both brands let you record and play back without a monthly fee, which puts both of them ahead of the big camera-first brands by the measure this site cares about most — the five-year arithmetic is in our subscription cost comparison. Both put the camera where a doorbell would go, which means you are replacing two products with one and need only one hole in the door. And both are substantially more expensive than a good keypad deadbolt plus a good video doorbell bought separately, which is the comparison most buyers should make before either of these. That alternative is ranked in our video doorbell roundup and our keypad lock roundup.
The decision rule
- You want one object on the door and nothing else— eufy E330. 2K, 8GB inside the lock, no card, no hub, no plan. The cheapest route into the category and the one with the fewest things to go wrong.
- You want a bell that rings inside the house— eufy S330, and budget for an SD card in the same order, because one is not included. You also get door-sensor auto-lock, which is the right behavior.
- You service the door rarely, or it is not your own house— Lockly Vision. Eight AAs rated up to twelve months beats four recharge trips a year by a wide margin, and AA cells need no planning. Accept Full HD and keep it under an overhang.
- You have iPhones and a shared entrance— Lockly Vision Zeno. Home Key tap entry plus the shuffling keypad is the combination nothing else here offers, and it is the only reason to pay the top price.
- Buy neither ifthe door is a slider, a french door or anything without a standard deadbolt bore — no video lock in this category fits those, and the alternatives are in our sliding-door lock roundup and our french door roundup. Buy neither, too, if you want continuous recording: these are event-clip devices like every other battery camera.
What decides the price
Battery architecture and the keypad, not the camera. The cameras across all four are within one step of each other, and the spread in price is explained by how many battery packs are in the box, whether the keypad shuffles, and whether Apple Home Key is present. eufy's cheaper models are cheaper because they contain less: one pack, a simpler keypad, no chime. That is a fair trade for a front door you walk past twice a day.
Before you buy either
Measure the door. A video lock is a full deadbolt replacement with a tall exterior escutcheon, and the camera module needs clearance above the bore that a plain deadbolt does not — which on a door with a narrow rail or a glass panel above the lock is the thing that kills the install. Our fit guide has the measurements, and the five-way ranking of the whole category is in our video lock roundup. Every head-to-head on the site is at the comparisons hub.
