Express Post
A pack, not loose batteries
A removable 10,000mAh rechargeable battery pack runs the lock. eufy’s AU page rates it for up to 14 months at around ten unlocks a day. Confirm the pack’s charging connection before buying a spare charger.
eufy Security Smart Lock E31 | Manufacturer Renewed (Good Condition)
$329.00
Skip to product information
eufy Security Smart Lock E31
Condition Manufacturer Renewed (Good Condition)
$329.00
Build around this lock
See what works with it and what it needs, with one kit total.
Know before you buy
The quick decision check
- Condition
- Manufacturer Renewed (Good Condition)
- Stock
- Currently unavailable
- Delivery · Australia Post
-
Express Post
FREE on $99+ orders
$12.95 below $99
Standard
$9.95 below $99
Order total after discounts.
Delivery estimates & policy
- System
- Standalone - Wi-Fi smart lock
- Recording mode
- Event alerts
Included items: Read this listing's contents before choosing accessories. A condition grade alone does not tell you which parts or packaging are included.
Compatibility: Works over Wi-Fi with the eufy app - no HomeBase involved.
Choose compatible extras Choose only what your setup needs
Use the regular Add to cart button for this product on its own. Check the setup requirements above and each extra's listing for included parts and firmware requirements.
This adds the product shown above and every selected extra in one step. Use the regular Add to cart button for the product on its own.
Choose your viewThe essentials or the full story. Switch any time.
CamGuard Australia
Townsville, QLDExpress included over $99.00
Smart Lock E31 Renewed · Good
A familiar touch. A rechargeable welcome home.
A Wi-Fi fingerprint deadbolt that unlocks by fingerprint, PIN, the eufy app or a physical key, powered by a removable rechargeable battery pack instead of AA batteries. It works from the eufy Security app over your home Wi-Fi.
- Fingerprint entry
- 10,000mAh rechargeable pack
- Up to 14 months per charge
- Matter over Thread
- Physical key backup
10,000mAh rechargeable pack
14 mobattery life, eufy's rating
50fingerprints stored
100passcodes stored
35–55 mmsupported door thickness
10unlocks/day used in eufy's rating
Battery life is eufy's own estimate at roughly ten unlocks a day. Real life varies with use, temperature, signal strength and how often the keypad is woken.
What it does well.
Smart Lock E31: the features that matter in everyday use.
Four ways in
A fingerprint, a keypad PIN, the eufy app over the lock's own Wi-Fi, or the physical key kept as a backup. Up to 50 fingerprints and 100 passcodes, on eufy's own figures.
Measure before you buy
Standard pre-bored deadbolt preparation: 35–55 mm door thickness, 60 or 70 mm backset, 38 or 54 mm cross bore, 25 mm edge bore. eufy's own template settles any doubtful measurement.
Matter: check your controller
A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem. Apple HomeKey is not supported.
The honest details
Before you buy.
- It uses a removable rechargeable pack, not loose batteries. A removable 10,000mAh rechargeable pack rated for up to 14 months. Confirm the pack’s charging connection before buying a charger. Its sibling, the E30, runs on replaceable AA batteries instead.
- Check your Matter controller requirements. A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
- Apple HomeKey is not supported. The lock works with the Apple Home app through Matter, but tap-to-unlock HomeKey is a separate feature eufy does not offer on this model.
- An IP weather rating is unconfirmed for this model. Neither this model's own eufy page nor its user guide states a published IP rating. Treat it as suited to a covered, sheltered doorway unless you can confirm otherwise with us.
- Good means light marks. Small cosmetic marks you may notice up close. They do not affect how it works.
- It alerts and logs. It does not replace basic door security. A smart lock is one part of home security, not the whole of it.
Specifications.
Published specifications for Smart Lock E31 (T85F0), grouped for easy comparison. Only sourced details are included.
Entry methods
- Unlock methods
- Fingerprint Unlocking, passcode entry, eufy app remote control, and a physical key
- Fingerprint capacity
- Up to 50 fingerprints and 100 different passcodes
- Status light
- Blue: door unlocked. Orange: door locked. Red: abnormal state
- Keyway
- Can be copied, can't be rekeyed
Power
- Battery
- 10,000mAh rechargeable battery pack, removable
- Battery life
- Powered by 10,000mAh rechargeable batteries, the eufy Smart Lock typically lasts up to 14 months, based on an average of 10 unlocks per day
- Emergency power
- If the battery dies, you can unlock the lock via the USB-C port on the bottom of the exterior lock
Connectivity
- App
- eufy Security app
- Matter
- Matter smart lock compatibility; works with the Apple Home app, though HomeKey is not supported
- Matter hub
- A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
- HomeBase
- HomeBase Mini, HomeBase 3 and HomeBase 2 are not supported for T85F0; no HomeBase is required for direct app control
Installation
- Door thickness
- 1⅜ in - 2¹/₆ in (35 mm - 55 mm)
- Backset
- 2⅜ in or 2¾ in (60 mm or 70 mm)
- Cross bore diameter
- 1 1/2 in or 2 1/8 in (38 mm or 54 mm)
- Edge bore / door hole diameter
- A hole: 1 in (25 mm)
- Minimum distance
- 1⅘ in (45 mm)
- Latch hole depth
- At least 1 in (25.4 mm) in the door frame, or calibration may fail
- Model
- T85F0
Make sure it fits your setup.
Fingerprint, PIN and the physical key provide local entry. The eufy app uses built-in Wi-Fi without HomeBase. Check controller requirements for optional Matter-over-Thread control.
Works with
- Fingerprint, keypad PIN, eufy app and the physical key. Fingerprint, PIN and the key are local entry methods. The eufy app connects over built-in Wi-Fi without a separate HomeBase or bridge.
- Matter over Thread. A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
- Standard pre-bored deadbolt doors. Door thickness 35–55 mm, 60 or 70 mm backset, 38 or 54 mm cross bore, 25 mm edge bore. The same measurements eufy publishes for both this lock and its sibling.
Does not work with
- Apple HomeKey tap-to-unlock. The eufy AU product page states plainly that “HomeKey is not supported”, even though the lock works with the Apple Home app through Matter.
- A doorframe outside the published measurements. Mortise cases, multipoint locks and non-standard bore patterns are not what this lock is designed for.
Check before buying
- Third-party ecosystem control (Apple Home, Google Home, Alexa, SmartThings). A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
- Exact weatherproofing rating. An IP weather rating is unconfirmed for this model. Message us before buying if the installed lock will be fully exposed rather than sheltered.
- HomeBase. eufy’s HomeBase compatibility guide lists T85F0 as unsupported on HomeBase Mini, HomeBase 3 and HomeBase 2. Direct app control uses built-in Wi-Fi.
Good condition, explained.
A cosmetic grade only. Same spec sheet as a new unit.
What Good means
This unit was used, then went through the manufacturer's renewal programme. Good is the middle cosmetic grade: light marks you may notice up close.
Who did the work
The manufacturer's renewal programme did the refurbishment and testing. We describe the cosmetics and the packaging. We do not claim to have tested your individual unit ourselves.
How it arrives
In protective packaging; retail packaging may vary. Fully working, with the accessories listed further down, and covered by our own 12-month warranty.
Right for you if
- You want fingerprint and PIN entry without giving up a physical key backup.
- You would rather recharge a removable pack than keep spare AA batteries on hand.
- Your door matches standard pre-bored deadbolt measurements.
- You are fine setting Matter control up later, with your own hub, if you want it at all.
Probably not for you if
- You specifically want AA batteries you can buy anywhere; that is the E30.
- You need a confirmed weatherproof rating for a fully exposed doorway.
- Your door needs a mortise case, multipoint lock or non-standard bore pattern.
- You want Apple HomeKey tap-to-unlock; it is not supported on this lock.
Plan your setup.
What you need
Before you bring it home
Charge the 10,000 mAh battery and confirm the door’s bore, backset and thickness before installation. The lock provides direct app control without a HomeBase. Optional Matter has platform-specific controller requirements; remote Apple Home control needs a home hub even where a supported iPhone can control the lock locally.
Power and connection
The outside port supplies emergency power
If the main battery is flat, the USB-C port below the exterior lock can supply temporary power for entry. eufy states that this port does not recharge the battery or transfer data. Keep a physical key available as another way in while the battery needs attention.
- Measure the door first. Door thickness 35–55 mm, 60 or 70 mm backset, 38 or 54 mm cross bore, 25 mm edge bore, and at least 25.4 mm of latch-hole depth in the frame. eufy's own installation diagram settles any doubtful measurement.
- Fit the deadbolt and exterior assembly. Standard Phillips screwdriver, the screws eufy includes. Check the latch recess shape before inserting the deadbolt, per the user guide.
- Wire and mount the interior assembly. Run the cables through the mounting plate slot, connect the tailpiece, then fasten the interior assembly screws.
- Fit the rechargeable pack and download the eufy Security app. Seat the correct rechargeable pack, close the cover, then follow the in-app steps to add the lock to your account. This model does not use loose AA batteries.
- Add Matter last, if you want it. Set up the lock in the eufy app first, then follow its Work with Matter flow. A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
Included with your order
Supplied items
- 1 × eufy Smart Lock E31, Manufacturer Renewed, Good cosmetic grade
- Adjustable deadbolt and core strike/mounting hardware
- Mounting plate and installation screws
- USB charging cable
- Printed instruction manual
Not included
- HomeBase: not required; HomeBase Mini, HomeBase 3 and HomeBase 2 are not supported for T85F0
- Third-party Matter controller or hub: not included; check the requirements of your chosen ecosystem
- AA batteries: not used by this model; it runs on the rechargeable pack
Packaging may vary. Some renewed products arrive in plain protective packaging. Physical backup keys are included. Spare batteries and other unlisted extras are not guaranteed; ask if essential.
Questions people ask.
Is a Good-grade unit worse at its job than a new one?
No. The grade describes the housing, not the electronics. A renewed unit runs the same published spec sheet. The difference is cosmetic marks and the plain packaging it ships in.
Do I need a HomeBase or a subscription to use it?
No HomeBase is required for direct Wi-Fi app control. eufy lists T85F0 as unsupported on HomeBase Mini, HomeBase 3 and HomeBase 2. There is no monthly fee for the lock’s own features.
How do I recharge it?
eufy describes a removable 10,000mAh rechargeable pack. We have not confirmed the pack’s charging connection from an exact T85F0 guide; check before buying a charger. The exterior USB-C port is for emergency power if the pack is flat.
Can I use it with Apple Home or Google Home?
A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem. Apple HomeKey is not supported.
When will it ship, and what does delivery cost?
We do our best to get orders out the same day. Same-day to 1 business day is our typical dispatch time from Townsville. During busy periods it can extend, though that is rare. Australia Post Express is included on every order over $99.00. Under $99.00 it is $9.95 tracked or $12.95 Express.
Who covers the warranty?
We do. CamGuard Australia is an independent importer and reseller, and this product carries our own 12-month warranty. It is not a manufacturer warranty. Your rights under Australian Consumer Law apply on top. Faulty or not as described inside that year and we cover the return postage.
Can I return it if I change my mind?
Yes, within 30 days of delivery if it is complete and unused. You pay the return postage and the original shipping is not refunded. Faulty or not-as-described returns are always free.
Independent importerWe buy genuine eufy stock and sell it under our own name. Not an official eufy dealer.
Our own 12-month warrantyHonoured by us in Townsville, not by the manufacturer. Faulty inside a year and we pay the return postage.
Express as standardAustralia Post Express included on every order over $99.00, from Townsville, Queensland.
Condition stated up frontThe grade on this listing is spelled out above so nothing about the unit is a surprise.
Smart Lock E31, renewed · good.
Fingerprint entry, rechargeable pack, direct Wi-Fi app control. Light cosmetic marks on the housing, full working order, and our 12-month warranty. If that is the trade you want, this is the listing.
SERVICE STATUS · INVESTIGATINGINCIDENT E31 · MATTER ROUTE
ACCESS STATUS · LOCAL ENTRY NETWORK
Your fingerprint is on hold for nobody.
The E31 turns entry into a service-status board: direct fingerprint, keypad, key and app routes, plus a Matter-over-Thread interchange for third-party smart homes.
LOCK SERVICEOPERATIONAL
Fingerprint route: direct
Matter route: controller and Thread border router required.
CamGuard model check
Smart Lock E30 vs E31
Same access basics. Different power plan. Both models offer fingerprint, passcode, eufy app and physical-key entry; the practical buying difference is how you power them.
E30Model T85F1
- Uses eight replaceable AA batteries
- eufy rates it for up to eight months at roughly ten unlocks per day
- The exterior USB-C port supplies temporary emergency power; it does not recharge the AA batteries
Choose E30 if: you prefer common batteries that can be replaced immediately.
E31Model T85F0
This listing
- Uses a removable 10,000mAh rechargeable battery pack
- eufy rates it for up to 14 months at roughly ten unlocks per day
- Rechargeable pack; confirm the pack’s charging connection. The exterior USB-C port is emergency power only
Choose E31 if: you prefer rechargeable power and the longer published runtime.
What they share
- Fingerprint, passcode, eufy app and physical-key entry
- Matter compatibility with Apple Home, Google Home, Alexa and SmartThings when the third-party platform has a compatible Matter hub or controller
- HomeBase Mini, HomeBase 3 and HomeBase 2 are not supported for T85F0
- The same standard deadbolt preparation: 35–55mm door thickness, 60 or 70mm backset, 38 or 54mm cross bore and 25mm edge bore
- Timed auto-lock starts after an unlock and does not sense whether the door has physically closed
Battery figures are eufy's published estimates based on roughly ten unlocks per day; actual life varies with use, settings, signal strength and conditions. This comparison describes the model power systems. Supplied batteries and accessories depend on the condition and inclusions stated elsewhere in this listing. Measure your door before ordering.
Live service components
Green ticks where they are earned.
Fast fingerprint recognition with capacity for up to 50 fingerprints.
Up to 100 passcodes for household and guest access.
Built-in Wi-Fi handles eufy app control without HomeBase; exact band and channel limits remain unconfirmed.
A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem.
Rechargeable pack, rated up to 14 months under eufy’s assumptions.
Visible scuffs and handling marks are expected; full function does not mean pristine cosmetics.
Incident post-mortem
Manufacturer Renewed · Good
This lock was previously used and restored through eufy’s renewal programme. Good is a mid cosmetic grade: visible scuffs and handling marks are expected up close. It ships in renewed non-retail packaging and is not Brand New.
Condition control: This is Manufacturer Renewed Good stock; visible cosmetic wear is expected and the product is not Brand New.
Service-status table
Specifications without fog.
ModelSmart Lock E31 · T85F0 familyexact
ConditionManufacturer Renewed Good · visible cosmetic wearnot new
EntryFingerprint, keypad, app, physical key, voice through Matterfive
CapacityUp to 50 fingerprints and 100 passcodespublished
Wi-FiBuilt-in Wi-Fi · exact band and channel limits unconfirmedAU trap
BatteryRemovable 10,000mAh rechargeable pack · confirm pack charging connection · underside USB-C port is emergency input onlyvariable
DoorDeadbolt · 35–55mm thick · 60/70mm backset · 38/54mm cross boremeasure
WeatherNo published IP rating found; sheltered placement sensibleboundary
Restart flowchart
Read this before checkout.
Fingerprint, keypad and key are local entry methods; the eufy app uses built-in Wi-Fi. Exact band and channel restrictions remain unconfirmed. A compatible Matter-over-Thread hub is the usual route. eufy also documents local Apple Home control without a hub on supported iPhones with iOS 18 or later; remote Apple Home control still needs a hub. Check your exact controller and ecosystem. Apple Home control is supported through Matter, but Apple HomeKey tap-to-unlock is not.
No outcome promise: placement, firmware, settings, network conditions and lawful use still matter. The product records, reports or unlocks as configured; it does not guarantee prevention, detection or uninterrupted access.
Access status · technician's kit bag
Three controlling hardware groups. One loose-item drawer still under investigation.
Renewed Good
parcel triage
parcel triage
Included · E31 exterior + interior assembliesExterior fingerprint/keypad/keyway assembly plus the interior assembly, thumb-turn and mounting plate.
Controlling promise · open drawers
Condition: Manufacturer Renewed Good. Expect visible cosmetic wear and renewed non-retail protective packaging.
Drawer rule: variable loose items stay in the shelf-check drawer; they do not graduate into “included” because a card looks confident.
Hold-music queue
Open the answer, not a sales trap.
Why can’t it see my Wi-Fi?
Follow the eufy app setup prompts and check signal strength. We have not confirmed exact T85F0 band and channel limits; ask before buying if your router configuration is critical.
Do core functions need a HomeBase?
No. Fingerprint, keypad, key and the eufy app use the lock’s direct connection.
Does Matter mean Apple HomeKey?
No. Apple Home control can work through Matter with the required Thread setup, but HomeKey is not supported.
What does Good look like?
Visible scuffs and handling marks on a fully functional manufacturer-renewed lock.
Will it fit a mortice lock?
No. It replaces a compatible deadbolt and must match the published door measurements.
Named Bonus Track
Bonus Track Thirteen still won't play. The missing track is fictional.
The E31’s exact Wi-Fi channel limits remain unconfirmed, so the joke is not a router specification.
Australian artefact strip: router setup · regional hold music · summer-storm service ticket.
CAMGUARD AUSTRALIA · guest carrier · Regional Pigeon BroadbandCorrect channel. Correct deadbolt. Service restored.
The useful route is direct and measurable. The comedy begins when nobody remembers who changed the router settings.
Before checkout: Confirm the Wi-Fi requirements, deadbolt dimensions and Matter setup above.
Included with your order
- 1 × eufy Smart Lock E31, Manufacturer Renewed, Good cosmetic grade
- Adjustable deadbolt and core strike/mounting hardware
- Mounting plate and installation screws
- USB charging cable
- Printed instruction manual
Packaging may vary. Some renewed products arrive in plain protective packaging.
Shipping, warranty and returns.
Shipping
Australia Post Express included on every order over $99.00. Under $99.00: $9.95 tracked or $12.95 Express. We do our best to get orders out the same day; same-day to 1 business day is our typical dispatch time from Townsville, Queensland; during busy periods it can extend, though that is rare.
Warranty
CamGuard Australia is an independent importer and reseller. Our own 12-month warranty applies · not a manufacturer warranty. Faulty or not as described inside that year and we cover the return postage. Your rights under Australian Consumer Law are additional.
Returns
Change of mind: 30 days from delivery, complete and unused, buyer pays return postage, original shipping not refunded. Faulty or not as described: we cover return postage.
Condition on this listing
Manufacturer Renewed, Good cosmetic grade. Previously used, renewed by the manufacturer, supplied in protective packaging, which may vary with light marks expected on the housing.
CamGuard Australia
© 2026 CamGuard Australia · ABN 62 385 894 763 · Townsville, QLD. Independent Australian reseller of eufy cameras, doorbells and locks; not an official or authorised supplier of eufy, Anker Innovations or their affiliates. Trademarks belong to their respective owners.
Condition: Manufacturer Renewed, Good cosmetic grade. Previously used, renewed by the manufacturer, supplied in protective packaging, which may vary with light marks expected on the housing. All refurbishment and testing on renewed stock is attributed to the manufacturer's renewal programme; we describe cosmetics and packaging only and do not test each unit individually. Compatibility: Smart Lock E31 (T85F0): fingerprint, PIN, key and direct Wi-Fi app control; optional Matter over Thread with controller requirements to check; HomeBase Mini, HomeBase 3 and HomeBase 2 unsupported; Apple HomeKey not supported. Runs on a removable 10,000mAh rechargeable battery pack, rated up to 14 months by eufy at roughly ten unlocks a day; varies with use, temperature and signal strength.
Access Status is a fictional visual world and original retail comedy; it does not reproduce a real retailer, carrier, broadcaster or organisation and implies no endorsement. Specifications sourced from the manufacturer and believed accurate at time of listing; features and compatibility may be updated without notice.
Product specifications
- Model number
- T85F0
- Backset
- 2⅜ in (60 mm) or 2¾ in (70 mm)
- Door thickness
- 1⅜ in – 2¹/₆ in (35 mm – 55 mm)
- Cross bore diameter
- 1½ in (38 mm) or 2⅛ in (54 mm)
- Door hole diameter
- 1 in (25 mm)
- Minimum clearance from existing lock
- 1 4/5 in (45 mm)
- Latch hole depth in the door frame
- 1 in / 25.4 mm
- Charging and emergency power port
- USB-C port on the exterior assembly, for emergency power only
- Keyway
- Can be copied, cannot be rekeyed
- Smart home support
- Matter-compatible with Apple Home, SmartThings, Alexa and Google-enabled devices
- Hub requirement
- A Matter-supporting hub is required for third-party ecosystems
- Battery
- 10,000 mAh rechargeable, up to 14 months at ~10 unlocks per day; low-battery alert at 20%; power-save mode adds up to one more month
- Dead-battery access
- Unlock via the USB-C port on the bottom of the exterior lock
Proof from real orders
Customer reviews
Product feedback and verified-buyer experiences collected by Judge.me.