The catch
eufy Security Video Smart Lock S330
You need an indoor spot with power for the included chime bridge.
Side by side
Eufy S330 vs C220: The view from the lock position has to be useful for S330’s camera
Quick verdict
If the lock position gives a useful view, S330 covers both a 2K video doorbell and the lock. C220 keeps the door hardware simpler with direct Wi-Fi and replaceable AA batteries.
Before you buy
Why, and what it costs you
Once video is added, the location decision changes
The deadbolt determines where the S330 camera sits.
Where this comes from
On S330 the camera is part of the lock assembly. C220 has no camera, so it can be paired with a doorbell positioned separately.
The catch
eufy Security Smart Lock C220
Its interior housing holds eight cells and is hardly low-profile.
eufy Security Video Smart Lock S330
- Why pick it
- You want the lock position to give you video and two-way audio.
- The supplied chime bridge has somewhere to sit and plug in.
- The catch
- You need an indoor spot with power for the included chime bridge.
eufy Security Smart Lock C220
- Why pick it
- A well-positioned video doorbell is already in place.
- You would rather have direct Wi-Fi and replaceable AA batteries.
- The catch
- Its interior housing holds eight cells and is hardly low-profile.
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What this page compares
eufy S330 and C220 are compared on video coverage, network hardware, charging and auto-lock behavior, with the chime bridge supplied with the S330 taken into account.
Which one fits
Pick the situations that sound like you
Need a doorbell with video at the lock
2K video is built into S330.
- eufy Security Video Smart Lock S330
- Better fit
- eufy Security Smart Lock C220
- Caution
A separate doorbell is already in place
No video hardware is duplicated with C220.
- eufy Security Video Smart Lock S330
- Good
- eufy Security Smart Lock C220
- Better fit
Want Wi-Fi direct, with no bridge
C220 connects on its own.
- eufy Security Video Smart Lock S330
- Caution
- eufy Security Smart Lock C220
- Better fit
Want AA cells I can replace
Eight AA batteries power C220.
- eufy Security Video Smart Lock S330
- Caution
- eufy Security Smart Lock C220
- Better fit
In practice
Differences you will notice
Once video is added, the location decision changes
The deadbolt determines where the S330 camera sits.
How we worked this out
On S330 the camera is part of the lock assembly. C220 has no camera, so it can be paired with a doorbell positioned separately.
Their Wi-Fi hardware paths are not the same
C220 connects directly, whereas S330 goes through the supplied chime bridge.
How we worked this out
In the manufacturer comparison table, S330 shows Bridge with Chime and C220 shows Direct Wi-Fi.
Different triggers hide behind auto-lock labels
A door sensor drives S330, while C220 lists countdown operation.
How we worked this out
Look at the documented auto-lock methods. Neither feature takes away the need to confirm latch alignment and to test how the installed lock behaves.
Option A
eufy Security, T8530
Video Smart Lock S330
This deadbolt replacement adds fingerprint entry, 2K doorbell video and a chime bridge in the box. Power comes from a 10,000 mAh rechargeable battery.
- Best for
- A front door where the camera, sitting at the deadbolt position, has a useful view
Facts we checked
- Documented to fit doors 1.375 to 2 inches thick.
- Entry works by fingerprint, keypad, app and physical key.
- The manufacturer lists a supplied bridge with a chime, since the lock itself has no direct Wi-Fi.
- Documentation covers the 2K camera, the 10,000 mAh rechargeable pack and the door-sensor auto-lock.
Option B
eufy Security, T8506
Smart Lock C220
You can enter by fingerprint, keypad or phone, and the documented door range is 1.375 to 2.17 inches thick.
- Best for
- unlock with a fingerprint on a replacement for my deadbolt
Facts we checked
- The documented door range is 1.375 to 2.17 inches thick.
- Fingerprint, keypad and phone are listed as entry options.
- Platforms documented include alexa, google.
- The documented installation is a full deadbolt replacement.
Spec by spec
Where they really differ
| Spec | eufy Security Video Smart Lock S330 | eufy Security Smart Lock C220 | In practice |
|---|---|---|---|
| Video | 2K camera and doorbell | No camera | S330 lets you see who is at the door. |
| Network | Included bridge with chime | Direct Wi-Fi | An indoor powered component comes with S330. |
| Battery | 10,000 mAh rechargeable | Eight AA cells | Charging and replacing call for different routines. |
| Auto-lock method | Built-in door sensor | Countdown timer | A timer by itself can’t show that the door is closed. |
| Communication | Two-way audio | No visitor audio | With S330 you can talk at the door. |
Trade-offs
What each pick costs you
With eufy Security Video Smart Lock S330
- Lock activity and camera activity share one rechargeable battery.
With eufy Security Smart Lock C220
- Apple Home Key is not supported.
Change of plan
When the answer changes
Fingerprint or video entry ranks below Apple Home Key
Neither model fits. In a replacement deadbolt, Encode Plus delivers Home Key along with direct Wi-Fi.
Decision guide
How to decide
S330 packs a 2K video doorbell and a lock together, and that makes sense when the lock position offers a useful view. C220 is the simpler door hardware, with direct Wi-Fi and replaceable AA batteries.
If your porch already has a camera
With C220, you do not duplicate video hardware at the deadbolt. A combined camera may add little if the current doorbell already has a useful view of visitors and packages. S330 is worth considering when one device can serve both purposes at a suitable viewing height.
Power and charging needs
The S330 rechargeable pack has to power both the camera and the lock, whereas C220 runs on eight replaceable AA cells. Published runtime estimates depend on usage, so they cannot be compared as a controlled test. Work out where the S330 chime bridge will plug in and how charging will be handled.
If the door often gets left ajar
Auto-lock on the S330 uses a door sensor, which is a different input from a countdown alone. Test the settings as installed and make sure the bolt moves freely. No smart lock can pull a poorly aligned door shut, nor confirm that an obstructed entrance is secure.
What this page can’t tell you
- The information here comes from manufacturer feature documentation, and no burglary, battery-life or recognition-speed test was performed.
- Whether a retrofit fits depends on the existing deadbolt and the adapter. Matching door thickness by itself does not settle the question.
By the numbers
What the data shows
What we found across the smart locks we compare, plus the checked facts behind each finding.
How many fit
None of the 25 models checked meets all of “Also see who is at the door”, “Use a fingerprint to unlock”, “Run it remotely without needing a hub”, and “Hand a code to family and guests”, so the pick goes to the closest practical compromise.
0 models fit, out of 25 checkedThe gap in numbers
eufy Security Smart Lock C220 lists 2.17 in for documented door-thickness ceiling, 8% more than the 2 in on eufy Security Video Smart Lock S330.
- eufy Security Video Smart Lock S330
- 2 in
- eufy Security Smart Lock C220
- 2.17 in
- Models with this figure
- 18 of 25
Show the facts and the math
How we countedThe count uses each product's current fit ratings for “Also see who is at the door”, “Use a fingerprint to unlock”, “Run it remotely without needing a hub”, and “Hand a code to family and guests”. A need with no documented match is not counted.
How we calculatedFigures take the top of each published door-thickness range. Check bore pattern, backset and lock type separately. For context, 18 of 25 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| eufy Security Video Smart Lock S330 |
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| eufy Security Smart Lock C220 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
eufy Security Video Smart Lock S330
You want the lock position to give you video and two-way audio.
See price & reviews on Amazoneufy Security Smart Lock C220
A well-positioned video doorbell is already in place.
See price & reviews on AmazonEach link opens in a new tab.
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