The Smart Device Compare comparison

Eufy FamiLock E32 vs Eufy Smart Lock E31

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Eufy FamiLock E32 and Eufy Smart Lock E31

A summary of selected recorded differences between these door locks. Check the full specification table below for details and conditions.

Specifications to check side by side

Backup Battery (power): Eufy FamiLock E32 — No; Eufy Smart Lock E31 — USB-C emergency charging.
Battery Life (power): Eufy FamiLock E32 — 8 months; Eufy Smart Lock E31 — 14 months.
Battery Type (power): Eufy FamiLock E32 — 8 AA; Eufy Smart Lock E31 — Built-in.

Information still to confirm

4 of 45 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · Eufy

Eufy FamiLock E32

Last updated October 2026

View full device profile

Option 2 · Eufy

Eufy Smart Lock E31

Last updated October 2026

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

3differences with recorded values for every device

4rows with missing or unspecified information

Consider your setup

Battery Life

Eufy FamiLock E328 months
Eufy Smart Lock E3114 months

Compare the stated test conditions. Catalog battery figures alone do not predict runtime in your home.

Inspect the specifications

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

Differences onlyMy priorities (0)

Showing 45 of 45 rows. “Not recorded” does not mean “No”.

Reading layout

Alerts

Door Lock Unlock

Eufy FamiLock E32: Yes
Catalog note
Real-time notifications and event history in the eufy app
Eufy Smart Lock E31: Yes

Low Battery Alert

Eufy FamiLock E32: Yes
Catalog note
Low-battery alerts through the app (official eufy FAQ)
Eufy Smart Lock E31: Yes
Catalog note
Low battery alert at 20% charge

Multiple Unlocking Failure Alert

Eufy FamiLock E32: Not recorded
Eufy Smart Lock E31: Not recorded

Tamper Proof Alert

Eufy FamiLock E32: Not recorded
Eufy Smart Lock E31: Not recorded

Automatic Lock

After Door Closed

Eufy FamiLock E32: Yes
Catalog note
Countdown auto-lock, with customizable timing from 2 seconds to 5 minutes (official eufy FAQ)
Eufy Smart Lock E31: Yes
Catalog note
Timer set in the app (1 second to 60 minutes) that starts after every unlock, whether or not the door is closed

Away

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Geolocation

Eufy FamiLock E32: Not recorded
Eufy Smart Lock E31: Not recorded

Connectivity

2.4 GHz Wi-Fi

Eufy FamiLock E32: Yes
Catalog note
Built-in Wi-Fi, no bridge required (official eufy product page and Amazon listing)
Eufy Smart Lock E31: Yes

5 GHz Wi-Fi

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Bluetooth

Eufy FamiLock E32: Yes
Catalog note
Matter runs over Thread, which uses Bluetooth Low Energy for commissioning
Eufy Smart Lock E31: Yes
Catalog note
The CSA certificate lists Thread and Bluetooth as its transports, and the Amazon listing states Bluetooth, Matter and Wi-Fi.

Other

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Thread

Eufy FamiLock E32: Thread Border Router required
Catalog note
Matter runs over Thread, so a Thread border router such as a HomePod mini or Apple TV 4K is needed for Matter control (official eufy FAQ)
Eufy Smart Lock E31: Thread Border Router required
Catalog note
Matter runs over Thread, so a Matter hub with a Thread border router (HomePod mini, Apple TV 4K, Nest Hub, Echo, SmartThings Station) is needed for Matter control.

Z Wave

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Zigbee

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Features

Anti Peep Password

Eufy FamiLock E32: Yes
Catalog note
Anti-Peep Passcode (official eufy product page)
Eufy Smart Lock E31: Yes
Catalog note
Random digits can be entered before and after the passcode (official product page)

Doorbell

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Emergency Fingerprint

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

One Time Password

Eufy FamiLock E32: Yes
Catalog note
Temporary passcodes via Access Management in the eufy app
Eufy Smart Lock E31: Yes

Periodic Password

Eufy FamiLock E32: Yes
Catalog note
Scheduled passcodes via Access Management in the eufy app
Eufy Smart Lock E31: Yes

Integrations

Alexa

Eufy FamiLock E32: Yes
Catalog note
Via Matter
Eufy Smart Lock E31: Yes

Apple Home

Eufy FamiLock E32: Yes
Catalog note
Via Matter
Eufy Smart Lock E31: Yes
Catalog note
Via Matter

Google Home

Eufy FamiLock E32: Yes
Catalog note
Via Matter
Eufy Smart Lock E31: Yes

Home Assistant

Eufy FamiLock E32: Yes
Catalog note
Via Matter
Eufy Smart Lock E31: Yes
Catalog note
Via Matter: the lock is Matter certified over Thread, and the Home Assistant Matter integration supports locks (a Thread border router is needed). Not part of the community eufy Security integration's supported-devices list, which is a separate path.

Matter

Eufy FamiLock E32

Yes

Catalog note

Matter over Thread (official eufy product page FAQ)

Eufy Smart Lock E31

Yes

Manufacturer source

Matter support is documented.

Eufy Smart Lock E31 manufacturer product page →

Source section: Model-specific product page summary
Model: Eufy Smart Lock E31
Region: Australia manufacturer page; other regional variants are not verified by this source
Firmware: Not specified by this source
Checked: 2026-10-04

This is the Australian product page. Confirm local hardware, lock fit and controller compatibility.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Matter 1.2 over Thread, certified by the CSA on 10 July 2024.

SmartThings

Eufy FamiLock E32: Yes
Catalog note
Via Matter
Eufy Smart Lock E31: Yes
Catalog note
Via Matter

Lock System

Apple Home Key

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Bluetooth

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Face Recognition

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Fingerprint

Eufy FamiLock E32

Yes

Manufacturer source

Fingerprint access is supported.

Eufy FamiLock E32 manufacturer product page →

Source section: Model-specific product page summary
Model: Eufy FamiLock E32
Region: US manufacturer page; other regional variants are not verified by this source
Firmware: Not specified by this source
Checked: 2026-10-04

Battery life is a manufacturer estimate, not a guaranteed replacement interval.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Self-learning AI fingerprint recognition

Eufy Smart Lock E31

Yes

Manufacturer source

Fingerprint unlocking is supported.

Eufy Smart Lock E31 manufacturer product page →

Source section: Model-specific product page summary
Model: Eufy Smart Lock E31
Region: Australia manufacturer page; other regional variants are not verified by this source
Firmware: Not specified by this source
Checked: 2026-10-04

This is the Australian product page. Confirm local hardware, lock fit and controller compatibility.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Unlock in less than 0.3 seconds, self-improving recognition

Nfc Tag

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Passcode

Eufy FamiLock E32: Yes
Catalog note
Touchscreen keypad
Eufy Smart Lock E31: Yes
Catalog note
Keypad

Physical Key

Eufy FamiLock E32: Yes
Eufy Smart Lock E31: Yes

Remote

Eufy FamiLock E32

Yes

Catalog note

Built-in Wi-Fi, no bridge required; control from anywhere in the eufy app

Eufy Smart Lock E31

Yes

Manufacturer source

Remote app control is available.

Eufy Smart Lock E31 manufacturer product page →

Source section: Model-specific product page summary
Model: Eufy Smart Lock E31
Region: Australia manufacturer page; other regional variants are not verified by this source
Firmware: Not specified by this source
Checked: 2026-10-04

This is the Australian product page. Confirm local hardware, lock fit and controller compatibility.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Built-in Wi-Fi, no bridge required

Power

Backup Battery

Eufy FamiLock E32: No
Eufy Smart Lock E31: USB-C emergency charging

Battery Life

Eufy FamiLock E32

8 months

Manufacturer source

The advertised battery life is up to eight months.

Eufy FamiLock E32 manufacturer product page →

Source section: Model-specific product page summary
Model: Eufy FamiLock E32
Region: US manufacturer page; other regional variants are not verified by this source
Firmware: Not specified by this source
Checked: 2026-10-04

Battery life is a manufacturer estimate, not a guaranteed replacement interval.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Eufy Smart Lock E31

14 months

Battery Type

Eufy FamiLock E32: 8 AA
Eufy Smart Lock E31: Built-in

Sensors

Open Close

Eufy FamiLock E32: No
Catalog note
Auto-lock is a countdown timer set in the app, with no door-position sensor documented
Eufy Smart Lock E31: No
Catalog note
eufy documents this model's auto-lock as timed locking without checking the door position

Video

2k Video

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Customizable Area

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Hd Video

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Internal Storage

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

microSD card slot

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Motion Detection

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Night Vision

Eufy FamiLock E32: No
Eufy Smart Lock E31: No

Range Of Detection

Eufy FamiLock E32: Not applicable / unspecified
Eufy Smart Lock E31: Not applicable / unspecified

Specifications for Eufy FamiLock E32 versus Eufy Smart Lock E31
Specification	Eufy FamiLock E32	Eufy Smart Lock E31
Alerts
Door Lock Unlock	Yes Catalog note Real-time notifications and event history in the eufy app	Yes
Low Battery Alert	Yes Catalog note Low-battery alerts through the app (official eufy FAQ)	Yes Catalog note Low battery alert at 20% charge
Multiple Unlocking Failure Alert	Not recorded	Not recorded
Tamper Proof Alert	Not recorded	Not recorded
Automatic Lock
After Door Closed	Yes Catalog note Countdown auto-lock, with customizable timing from 2 seconds to 5 minutes (official eufy FAQ)	Yes Catalog note Timer set in the app (1 second to 60 minutes) that starts after every unlock, whether or not the door is closed
Away	No	No
Geolocation	Not recorded	Not recorded
Connectivity
2.4 GHz Wi-Fi	Yes Catalog note Built-in Wi-Fi, no bridge required (official eufy product page and Amazon listing)	Yes
5 GHz Wi-Fi	No	No
Bluetooth	Yes Catalog note Matter runs over Thread, which uses Bluetooth Low Energy for commissioning	Yes Catalog note The CSA certificate lists Thread and Bluetooth as its transports, and the Amazon listing states Bluetooth, Matter and Wi-Fi.
Other	No	No
Thread	Thread Border Router required Catalog note Matter runs over Thread, so a Thread border router such as a HomePod mini or Apple TV 4K is needed for Matter control (official eufy FAQ)	Thread Border Router required Catalog note Matter runs over Thread, so a Matter hub with a Thread border router (HomePod mini, Apple TV 4K, Nest Hub, Echo, SmartThings Station) is needed for Matter control.
Z Wave	No	No
Zigbee	No	No
Features
Anti Peep Password	Yes Catalog note Anti-Peep Passcode (official eufy product page)	Yes Catalog note Random digits can be entered before and after the passcode (official product page)
Doorbell	No	No
Emergency Fingerprint	No	No
One Time Password	Yes Catalog note Temporary passcodes via Access Management in the eufy app	Yes
Periodic Password	Yes Catalog note Scheduled passcodes via Access Management in the eufy app	Yes
Integrations
Alexa	Yes Catalog note Via Matter	Yes
Apple Home	Yes Catalog note Via Matter	Yes Catalog note Via Matter
Google Home	Yes Catalog note Via Matter	Yes
Home Assistant	Yes Catalog note Via Matter	Yes Catalog note Via Matter: the lock is Matter certified over Thread, and the Home Assistant Matter integration supports locks (a Thread border router is needed). Not part of the community eufy Security integration's supported-devices list, which is a separate path.
Matter	Yes Catalog note Matter over Thread (official eufy product page FAQ)	Yes Manufacturer source Matter support is documented. Eufy Smart Lock E31 manufacturer product page → Source section Model-specific product page summary Model Eufy Smart Lock E31 Region Australia manufacturer page; other regional variants are not verified by this source Firmware Not specified by this source Checked 2026-10-04 This is the Australian product page. Confirm local hardware, lock fit and controller compatibility. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Matter 1.2 over Thread, certified by the CSA on 10 July 2024.
SmartThings	Yes Catalog note Via Matter	Yes Catalog note Via Matter
Lock System
Apple Home Key	No	No
Bluetooth	No	No
Face Recognition	No	No
Fingerprint	Yes Manufacturer source Fingerprint access is supported. Eufy FamiLock E32 manufacturer product page → Source section Model-specific product page summary Model Eufy FamiLock E32 Region US manufacturer page; other regional variants are not verified by this source Firmware Not specified by this source Checked 2026-10-04 Battery life is a manufacturer estimate, not a guaranteed replacement interval. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Self-learning AI fingerprint recognition	Yes Manufacturer source Fingerprint unlocking is supported. Eufy Smart Lock E31 manufacturer product page → Source section Model-specific product page summary Model Eufy Smart Lock E31 Region Australia manufacturer page; other regional variants are not verified by this source Firmware Not specified by this source Checked 2026-10-04 This is the Australian product page. Confirm local hardware, lock fit and controller compatibility. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Unlock in less than 0.3 seconds, self-improving recognition
Nfc Tag	No	No
Passcode	Yes Catalog note Touchscreen keypad	Yes Catalog note Keypad
Physical Key	Yes	Yes
Remote	Yes Catalog note Built-in Wi-Fi, no bridge required; control from anywhere in the eufy app	Yes Manufacturer source Remote app control is available. Eufy Smart Lock E31 manufacturer product page → Source section Model-specific product page summary Model Eufy Smart Lock E31 Region Australia manufacturer page; other regional variants are not verified by this source Firmware Not specified by this source Checked 2026-10-04 This is the Australian product page. Confirm local hardware, lock fit and controller compatibility. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Built-in Wi-Fi, no bridge required
Power
Backup Battery	No	USB-C emergency charging
Battery Life	8 months Manufacturer source The advertised battery life is up to eight months. Eufy FamiLock E32 manufacturer product page → Source section Model-specific product page summary Model Eufy FamiLock E32 Region US manufacturer page; other regional variants are not verified by this source Firmware Not specified by this source Checked 2026-10-04 Battery life is a manufacturer estimate, not a guaranteed replacement interval. Document check only; not a hands-on test or verification of every regional or firmware variant.	14 months
Battery Type	8 AA	Built-in
Sensors
Open Close	No Catalog note Auto-lock is a countdown timer set in the app, with no door-position sensor documented	No Catalog note eufy documents this model's auto-lock as timed locking without checking the door position
Video
2k Video	No	No
Customizable Area	No	No
Hd Video	No	No
Internal Storage	No	No
microSD card slot	No	No
Motion Detection	No	No
Night Vision	No	No
Range Of Detection	Not applicable / unspecified	Not applicable / unspecified

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology