10 models to compare

Should your smart lock use AA batteries or recharge?

Eufy C220 and E32 use 8 AA cells with fingerprint entry and IP53. Charging differs.

All five 2K-camera models recharge; FamiLock S3 and S3 Max retain 4 AAA backups.

Disclosure: RenoRanked participates in the Amazon Associates Program and may earn commissions from qualifying purchases through product links on this site.

With no preferences selected: eufy FamiLock E34 is one option to compare.

No hands-on testingMethod and sources

eufy FamiLock E34 · first with a product link

Model / item: T85P0111

Power source: Rechargeable With Lithium Backup.
Featured entry method: Palm Vein.

What to note:

Not listed by the maker: published IP rating, camera resolution.

View at eufy

If you choose Face for featured entry method, the first option with a product link becomes eufy Smart Lock E40.

10 models compared; 10 have a product-page link.

The picks

5 options to compare

Compare the details that matter to your setup.

An option to compare

eufy FamiLock E34

Power source: Rechargeable With Lithium Backup.

Model / item: T85P0111

Key details

Featured entry method: Palm Vein.

What to note

Not listed by the maker: published IP rating, camera resolution.

Compare specs: Power source: Rechargeable With Lithium Backup here; Rechargeable With AAA Backup on eufy Familock S3.

Featured entry method: Palm VeinPower source: Rechargeable With Lithium Backup

See all 4 specs

Featured entry methodPalm Vein

Power sourceRechargeable With Lithium Backup

Published IP ratingNot listed by the maker

Camera resolutionNot listed by the maker

2 of 4 specs available · source checked September 26, 2026 · Source ↗
eufy · Product page checked September 26, 2026

View at eufy Compare

Featured entry method: Face

eufy Smart Lock E40

Featured entry method: Face.

Model / item: T85M0J11

Key details

Published IP rating: IP65.

What to note

Camera resolution: 2K.

Compare specs: Featured entry method: Face here; Physical Buttons on Smart Lock C30.

Featured entry method: FacePower source: Rechargeable With Lithium BackupPublished IP rating: IP65

See all 4 specs

Featured entry methodFace

Power sourceRechargeable With Lithium Backup

Published IP ratingIP65

Camera resolution2K

4 of 4 specs available · source checked September 26, 2026 · Source ↗
eufy · Product page checked September 26, 2026

View at eufy Compare

Featured entry method: Fingerprint

eufy Smart Lock E32

Featured entry method: Fingerprint.

Model / item: T85F2J11

Key details

Power source: 8 aa batteries.

What to note

Not listed by the maker: camera resolution.

Compare specs: Featured entry method: Fingerprint here; Face on eufy Smart Lock E40.

Featured entry method: FingerprintPower source: 8 aa batteriesPublished IP rating: IP53

See all 4 specs

Featured entry methodFingerprint

Power source8 aa batteries

Published IP ratingIP53

Camera resolutionNot listed by the maker

3 of 4 specs available · source checked September 26, 2026 · Source ↗
eufy · Product page checked September 26, 2026

View at eufy Compare

Power source: Rechargeable

Video Smart Lock E330

Power source: Rechargeable.

Model / item: T85311Y1

Key details

Featured entry method: Fingerprint.

What to note

Camera resolution: 2K.

Compare specs: Power source: Rechargeable here; Rechargeable With Lithium Backup on eufy FamiLock E34.

Featured entry method: FingerprintPower source: RechargeablePublished IP rating: IP65

See all 4 specs

Featured entry methodFingerprint

Power sourceRechargeable

Published IP ratingIP65

Camera resolution2K

4 of 4 specs available · source checked September 26, 2026 · Source ↗
eufy · Product page checked September 26, 2026

View at eufy Compare

Power source: Rechargeable With AAA Backup

eufy Familock S3

Featured entry method: Palm Vein.

Model / item: T85V01Y1

Key details

Power source: Rechargeable With AAA Backup.

What to note

Camera resolution: 2K.

Compare specs: Featured entry method: Palm Vein here; Fingerprint on eufy Smart Lock E32.

Featured entry method: Palm VeinPower source: Rechargeable With AAA BackupPublished IP rating: IP65

See all 4 specs

Featured entry methodPalm Vein

Power sourceRechargeable With AAA Backup

Published IP ratingIP65

Camera resolution2K

4 of 4 specs available · source checked September 26, 2026 · Source ↗
eufy · Product page checked September 26, 2026

View at eufy Compare

Comparing eufy FamiLock E34 · eufy Familock S3

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The facts that differ

Choose up to three models to compare side by side.

Differences only

1 identical spec shown. Details that do not apply to these models are omitted.

Published specification comparison
Spec	eufy FamiLock E34Model / item: T85P0111No preferences selected.	eufy Familock S3Model / item: T85V01Y1No preferences selected.
Featured entry method	Palm Vein	Palm Vein
Power source	Rechargeable With Lithium Backup	Rechargeable With AAA Backup
Published IP rating	Not listed by the maker	IP65
Camera resolution	Not listed by the maker	2K

eufy FamiLock E34

Model / item: T85P0111

No preferences selected.

Featured entry method: Palm Vein
Power source: Rechargeable With Lithium Backup
Published IP rating: Not listed by the maker
Camera resolution: Not listed by the maker

eufy Familock S3

Model / item: T85V01Y1

No preferences selected.

Featured entry method: Palm Vein
Power source: Rechargeable With AAA Backup
Published IP rating: IP65
Camera resolution: 2K

eufy FamiLock E34

View at eufy

eufy Familock S3

View at eufy

Compare all 10 models

— = no verified listing yet. The published order is independent of links.

All models and their decision specs
Product	How it compares	Key spec	Compare	Action
eufy FamiLock E34	Compared with eufy Familock S3: power source, Rechargeable With Lithium Backup vs Rechargeable With AAA Backup. Model / item: T85P0111	Featured entry method: Palm Vein	Compare	View at eufy
eufy Familock S3	Compared with eufy Smart Lock E32: featured entry method, Palm Vein vs Fingerprint. Model / item: T85V01Y1	Featured entry method: Palm Vein	Compare	View at eufy
eufy FamiLock S3 Max	Compared with eufy Smart Lock E32: featured entry method, Palm Vein vs Fingerprint. Model / item: E85V0JY1	Featured entry method: Palm Vein	Compare	View at eufy
eufy Smart Lock E32	Compared with eufy Smart Lock E40: featured entry method, Fingerprint vs Face. Model / item: T85F2J11	Featured entry method: Fingerprint	Compare	View at eufy
eufy Smart Lock E40	Compared with Smart Lock C30: featured entry method, Face vs Physical Buttons. Model / item: T85M0J11	Featured entry method: Face	Compare	View at eufy
Smart Lock C30	Compared with Smart Lock S230: featured entry method, Physical Buttons vs Fingerprint. Model / item: T85D0111	Featured entry method: Physical Buttons	Compare	View at eufy
Smart Lock C220	Compared with Smart Lock C30: featured entry method, Fingerprint vs Physical Buttons. Model / item: T8506111	Featured entry method: Fingerprint	Compare	View at eufy
Smart Lock S230	Featured entry method: Fingerprint; Published IP rating: IP65. Model / item: T8510013	Featured entry method: Fingerprint	Compare	View at eufy
Video Smart Lock E330	Power source: Rechargeable; Featured entry method: Fingerprint. Model / item: T85311Y1	Featured entry method: Fingerprint	Compare	View at eufy
Video Smart Lock S330	Featured entry method: Fingerprint; Power source: Rechargeable. Model / item: E85301Y1	Featured entry method: Fingerprint	Compare	View at eufy

eufy FamiLock E34

Compared with eufy Familock S3: power source, Rechargeable With Lithium Backup vs Rechargeable With AAA Backup.

Model / item: T85P0111

Featured entry method: Palm Vein

CompareView at eufy

eufy Familock S3

Compared with eufy Smart Lock E32: featured entry method, Palm Vein vs Fingerprint.

Model / item: T85V01Y1

Featured entry method: Palm Vein

CompareView at eufy

eufy FamiLock S3 Max

Compared with eufy Smart Lock E32: featured entry method, Palm Vein vs Fingerprint.

Model / item: E85V0JY1

Featured entry method: Palm Vein

CompareView at eufy

eufy Smart Lock E32

Compared with eufy Smart Lock E40: featured entry method, Fingerprint vs Face.

Model / item: T85F2J11

Featured entry method: Fingerprint

CompareView at eufy

eufy Smart Lock E40

Compared with Smart Lock C30: featured entry method, Face vs Physical Buttons.

Model / item: T85M0J11

Featured entry method: Face

CompareView at eufy

Smart Lock C30

Compared with Smart Lock S230: featured entry method, Physical Buttons vs Fingerprint.

Model / item: T85D0111

Featured entry method: Physical Buttons

CompareView at eufy

Smart Lock C220

Compared with Smart Lock C30: featured entry method, Fingerprint vs Physical Buttons.

Model / item: T8506111

Featured entry method: Fingerprint

CompareView at eufy

10 catalog models

How the comparison works

Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.

Source dates appear with each link below. A source date does not confirm today's price or stock.

Finder methodology Report a correction

Sources for all 10 models

eufy FamiLock E34: Source 1 ↗ · September 26, 2026
eufy Familock S3: Source 1 ↗ · September 26, 2026
eufy FamiLock S3 Max: Source 1 ↗ · September 26, 2026
eufy Smart Lock E32: Source 1 ↗ · September 26, 2026
eufy Smart Lock E40: Source 1 ↗ · September 26, 2026
Smart Lock C220: Source 1 ↗ · September 26, 2026
Smart Lock C30: Source 1 ↗ · September 26, 2026
Smart Lock S230: Source 1 ↗ · September 26, 2026
Video Smart Lock E330: Source 1 ↗ · September 26, 2026
Video Smart Lock S330: Source 1 ↗ · September 26, 2026

The highlighted unlock method is not the whole access plan

eufy's FamiLock range includes palm-vein entry, while its Video Smart Lock options highlight fingerprint entry. The 10 locks also include face entry and physical-button entry. Choose the method you want, then read the selected lock's complete access and backup-entry instructions.

Our comparison uses eufy's access, power and protection descriptions without checking biometric recognition or door fit in an installation. Compare door preparation and the exact installation instructions before deciding that an access feature makes the lock suitable for your existing door.

A rechargeable lock can have a separate backup battery

Power-source details are available for 8 locks. The palm-vein FamiLock options include rechargeable designs with AAA or lithium backup, while the Video Smart Lock fingerprint options use rechargeable power. Other fingerprint locks use 8 AA batteries; a missing power description stays unresolved.

Read the full battery arrangement, supplied battery package and charging or replacement instructions for your chosen lock. A protection label does not describe how long a battery lasts, and a highlighted unlock method does not tell you what happens when the main battery is depleted.

Before you buy

Is the featured entry method the only way to unlock?

Not necessarily. It's the method each eufy page highlights, such as palm vein on the E34 or facial recognition on the E40, and a lock may also take a code, a key or the app; the model page covers them all.

Will one of these fit my door and smart-home setup?

The pages compared here don't settle door fit or ecosystem support, so compare your door against the exact model's install guide and supported platforms. Similar names don't mean identical compatibility, and an IP rating doesn't make every part of a lock suited to outdoor mounting; follow eufy's installation instructions. Go AA to skip charging. The eufy C220 and E32 run on 8 AA batteries, with fingerprint entry and IP53. Recharging buys the extras: all five 2K camera models are rechargeable and IP65, and the FamiLock S3 Max and S3 keep 4 AAA cells as backup.

Does a blank camera field mean the lock has no camera?

No. It means that page gave no resolution; the E34, C220, E32, C30 and S230 are blank, and a blank isn't proof a feature is missing. The C30 and S230 pages also give no battery setup, and the S330 and E330 name no backup.