Check your door

Simpled EF Slim Series

Simpled EF Slim Series Smart Lock

The slim fingerprint lock for the front door you already own.

Fingerprint, phone, code, card or key: every way in, on a slim lock made for the multipoint door you already have.

£209.99

Configure yours£209.99Check your door60 seconds · no email needed

simpled.uk on Trustpilot: 4.8 · 396 reviews (opens in a new tab)

Simpled EF Slim Series smart lock in silver

Why the EF Slim Series.

No More Searching for Keys

Open with your fingerprint, passcode or fob, without reaching for your keys or phone.

Simpled smart door lock with illustrations of fingerprint, passcode, app, Apple Watch, RFID and key access

Share Access, Not Spare Keys

Give family, guests or colleagues their own digital access and manage their permissions through the app.

Hand holding a phone showing family, guest and employee access permissions beside a Simpled smart lock

Keep Your Lift-to-Lock Routine

Add smart access to a compatible multipoint door while keeping the familiar handle-lifting action.

Simpled smart lock with its handle raised beside an exposed multipoint mechanism and locking direction arrows.

Manage Access While You’re Away

Add an optional Wi-Fi Gateway to unlock remotely and manage supported access settings.

Hand using the Simpled app beside a smart door lock, with connection lines between the phone and keypad.

Ready for Outdoor Entry

A weather-resistant exterior panel supports everyday use in changing conditions.

Rain droplets on a Simpled smart door lock, with a person holding an umbrella on the garden path outside.

A Key When You Need It

Keep an emergency mechanical key as an alternative to electronic access.

Woman using a mechanical key beneath a Simpled smart lock, with an inset showing the emergency keyhole.

Make it yours

Configure your lock.

Choose your finish. UK delivery is free, with 60 days to change your mind.

  • EFSmart door lock
  • EF-Slim-Series-Smart-Lock
    Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
    Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
    Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
    Simpled EF Slim Series Smart Lock
9 photos
  • EFSmart door lock
  • EF-Slim-Series-Smart-Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock
  • Simpled EF Slim Series Smart Lock

Simpled EF Slim Series

Simpled EF Slim Series Smart Lock

simpled.uk on Trustpilot: 4.8 · 396 reviews (opens in a new tab)

£209.99

Price in GBP, including VAT.

Colour· Silver

In stock · usually delivered in 2 working days

Check my door first

Fitted on your door by our install partner, where we cover. After you order, you tell us about your door and they book a visit.

Free UK delivery · 60-day money-back guarantee · 24-month warranty

Not sure which model?Help me choose

  • Security128-bit AES
  • Fingerprints200
  • eKeysUnlimited
  • Fits doors40–60 mm
Good to know
  • Only the outside panel is weatherproof: the inside panel must stay in a covered, dry place.
  • The box covers doors 35–60 mm thick; a thicker door needs the longer spindle and screws, sold separately.
  • The inside handle is always unlocked, so the door opens from inside at once. A door that must stay locked both ways needs a double-sided lock.
  • A wet or worn finger can miss: enrol each finger three times, and the code and fob always work.
Free UK delivery
£209.99

The detail

Everything about the EF Slim Series Smart Lock

Details

Simpled EF Slim Series Smart Lock

The Simpled EF Slim Series Smart Lock offers a refined and contemporary solution for secure access with everyday convenience in mind. Designed with a slim and elegant profile, this smart lock enhances any door while providing intuitive control through the TTLock App — allowing you to create digital keys, set passcodes, and manage access with ease
Multiple unlocking methods deliver flexible, keyless entry, while mechanical keys are included for backup peace of mind. Features such as Auto-Lock and Passage Mode make daily use smooth and hassle-free, whether for family homes or managed properties. Built with reliable materials and thoughtful engineering, the EF Slim Series provides modern security that feels effortless and dependable.

Specifications

Features

  • The inside panel is not weatherproof and must be in a covered area where it will not get wet, to prevent damage from exposure to moisture or water. Only the outside panel of the lock is weatherproof.
  • Fits most existing handle-up multipoint mechanisms
  • 24 months warranty
  • Handles are reversible, left or right, no problem!
  • Auto-Lock feature – No guesswork, No doubt! It will lock it for you!
  • Share Timed eKey or Passcodes; managing an Airbnb suite has never been easier.
  • The Inside handle is always unlocked for easier and faster exit
  • Passage Mode – When this mode is turned on, the door remains unlocked after the next unlocking until you actively choose to re-lock it.

Technical Characteristics

  • Model: EF-SP
  • Materials: Handle: Stainless Steel 304, Panel: Aluminum alloy
  • Lock Weight: 2.5 KG
  • Unlocking methods: Bluetooth, Fingerprint, Password, Proxy Fob / Sticker, Emergency Key, Alexa (WiFi Bridge is needed), Google home (WiFi Bridge is needed)
  • Colour: Silver
  • Bank-level encryption: Every Simpled smart lock features robust 128-bit AES protection
  • Low Battery Alarm: Less than 4.8 v
  • Doors Applicable: Aluminium Door, Wooden Door, UPVC doors, etc
  • Working Voltage: 6V/4 x AA Batteries (Energiser Lithium AA Batteries are recommended)
  • Door Thickness to Fit: 40-60mm (For thicker doors you need to purchase lengthier screws and stubs)
  • Dimensions:-External panel (without handle): Height: 310mm, Width: 39mm, Length: 23mm-External panel (with handle): Height: 310mm, Width: 127mm, Length: 72mm-Internal panel (without handle): Height: 310mm, Width: 39mm, Length: 23mm-Internal panel (with handle): Height: 310mm, Width: 127mm, Length: 72mm* For more clarity, check the specification image.
  • Data Capacity: Fingerprint: 200, Passcode: 150, Fob: 200, Remote Controller: 1, eKeys (smartphone access): Unlimited
  • Working Temperature: -10°C-55°C

Shipping & Returns

UK delivery is free on every order, and returns are free too.

Every order is covered by our 60-day no-quibble money-back guarantee. If it is not right for your door, send it back.

Every Simpled product carries a 24-month warranty against defects in materials and workmanship.

Full terms: Shipping policy · Terms and conditions

Reviews

No ratings yet.

Customers have asked 7 questions about this product.

  1. Stuart asked ·

    Will this lock integrate with smart home systems, specifically Home Assistant?

    1. Sahar answered ·

      All Simpled locks work with Google Home and Alexa if you have a Simpled WiFi bridge.

  2. Stephen G. asked ·

    Does your product work in the United States? Also, I would like to confirm that the EF model is the I want to prevent small children from leaving the home without unlocking the door.

    1. Sahar answered ·

      Yes. The app that our locks work with, is available in the US as well. If you do not want your children to get out without unlocking the door, I would recommend our double-sided smart lock. For more information, you can contact our support team through LiveChat or via email

  3. Dae asked ·

    Assuming a “regular” usage (say 8-10 locking/unlocking per day) how long would battery last and is there a warning (audio or visual) when batteries need to be changed ?

    1. Sahar answered ·

      Hello.

      The batteries on our lock usually last 9-10 month and you can check the battery percentage on the app.

  4. Michael S. asked ·

    What finishes are available

    1. Sahar answered ·

      Just silver is available.

  5. Jeanette G. asked ·

    How does the auto locking feature work with multi lever doors where you need to lift the handle to engage the levers

    1. Sahar answered ·

      Simpled Smart Locks have an Auto lock feature, which means that after you close the door, from the outside door will be locked, as the spindle is not engaged, by pulling the handles door will not open and of course, for extra security, you can lift the handle to engage the multipoint mechanism. Please remember from inside you can always open the door.

More questions (2)

  1. Anil K. asked ·

    Hello, I bought an EF-SP but the handle looks different than what’s advertised (it’s round vs the flat one on the website). Did I get an older model or was it redesigned? Thank yoi

    1. Sahar answered ·

      Hi there, Would you please share a picture of the product you received with our agent on live chat?

  2. Leigh R. asked ·

    What is the difference between the SF and EF series locks?

    1. Sahar answered ·

      Hello. These are the difference between the Slim series models: DFF: Double-sided door lock with a fingerprint sensor on the inside. EF: This is not double-sided but has a wider range for the handle compared to other locks on the Slim series. HF: normal Slim series in Silver/black SF: normal Slim series in Matte black

Read what customers say about the whole range

Model code: EF-SPP. Quote it when you contact support.

We love taking your calls

Features of the EF Slim Series Closer. It holds up.

Every feature of the EF Slim Series, one by one. Tap a photo for a closer look.

Simpled EF Slim smart lock with graphics showing capacity for 200 fingerprints, 150 passcodes and 200 RFID tags
Large User CapacityStore up to 200 fingerprints, 150 passcodes and 200 RFID fobs or tags.
Woman holding a smartphone and entering a passcode on a Simpled EF Slim smart door lock
Smart Access SharingCreate and share digital eKeys, with user permissions managed through the app.
Simpled EF Slim smart lock with illustrated fingerprint, passcode, smartphone, Apple Watch, RFID and key entry options.
Multiple Unlocking MethodsUnlock with fingerprint, passcode, smartphone app, Apple Watch, RFID fob or phone tag, or an emergency key.
Simpled EF Slim smart lock with a raised handle, exposed locking mechanism and arrows illustrating handle rotation
Extended Handle RotationA wider handle rotation range supports a broader range of compatible locking mechanisms.
Rain-covered Simpled EF Slim smart lock on a black door, with a person carrying an umbrella outside
Weather-Resistant ExteriorThe outside panel is weather-resistant, with an operating temperature of −10°C to 55°C.
Simpled EF Slim smart lock on an open door, with highlighted locking points along the door edge
Multipoint Lock SupportLift the handle to engage the bolts and hooks on a compatible multipoint mechanism.
Simpled EF Slim smart lock on a wooden door with curved arrows showing the handle's movement
Automatic Handle RelockingThe outside handle returns to its locked state after access. Multipoint bolts still require manual handle lifting.
Simpled EF Slim smart lock beside a Wi-Fi gateway and smart speaker, with wireless and voice control icons.
App & Smart Home IntegrationUse the app nearby via Bluetooth. Add an optional Gateway for supported remote functions and Alexa or Google Home integration.
Woman viewing the lock control app beside a Simpled EF Slim smart lock, with a glowing padlock graphic
Auto-Lock ProtectionAutomatically secures your door for added peace of mind.

How to fit the EF Slim Series On your existing door, before the kettle's cold.

  1. Step 01

    Check your fit

    Our 60-second checker confirms the EF Slim Series suits your door, or tells you honestly if it won't. No email address needed.

  2. Step 02

    Fit it yourself

    Roughly 20 minutes with a screwdriver, on the door you already own. No locksmith, no new door, no drama.

    Watch the install video
  3. Step 03

    Live lighter

    Pair the TTLock app, enrol your fingerprints, share access on your terms. Add the WiFi Bridge for Alexa and Google Home.

Check your door60 seconds · no email needed

Your door. In your hands.

Tap, schedule and share access. Simple.

  • Create and share PIN codes remotely
  • Create and share eKeys remotely
  • PIN code management
  • Add or delete cards
  • Battery level, volume and system updates
  • Bluetooth access
  • Wi-Fi access from anywhere
  • Time attendance
  • eKey management
  • Fingerprint management
  • Unlocking records

Remote access requires a compatible Wi-Fi connection or gateway.

Key specifications Nothing rounded up.

Security
128-bit AES

Your fingerprints and codes stay on the lock, encrypted.

Fingerprints
200

Enough fingerprints, codes and fobs for a family, a flat or a small hotel.

eKeys
Unlimited

Share phone access with family or guests, and take it back in the app.

Fits doors
40–60 mm

Measure the edge of the door; a thicker door needs longer screws.

Power
4× AA

Four AA batteries and no wiring; lithium AAs last longest.

Materials
Stainless Steel 304 · Aluminum alloy

Stainless steel where hands go, aluminium alloy where the weather goes.

Works in
−10°C–55°C

Fine on a British front door, winter and summer.

Warranty
24 months

Hassle-free support if anything goes wrong.

Before you buy Every worry, handled.

What type of doors can a digital lock be fitted on?

Simpled smart locks can be installed on most main doors and gates Materials such as wooden, metal, plastic, sliding doors and glass You can send your existing door/gate photos for further assistance to our support team at support@simpled.tech.

Does it include the Gateway? Do I need a Gateway?

Normally, this smart lock doesn't come with a gateway. You need to add that to the basket. It's good to know that Without Gateway, you can still: See who access the lock with their smartphone Share keys with your family, friends, maid or dog walker Open your lock using your smartphone or smartwatch Limit other's access or even delete theirs With Gateway, you will be able to: Open your lock from anywhere Remotely read the lock operation, including fingerprint, tags, password Use it with your Alexa

What happens if I lose my physical key?

For security purposes, our physical keys are designed unique to your lock ID, and we do not have spares of their respective physical keys. We recommend keeping a key with a trusted family member from the first day. The lock can still be unlocked via other means based on your lock model, i.e. smartphone unlock, fingerprints, pin codes, etc

My batteries have completely run out. What can I do?

There are two solutions: Physical Keys Physical keys are provided together with Simpled smart locks, which ensures that you will still be able to enter the house mechanically even if its batteries run out. It is strongly recommended to keep at least one spare key on you or a family at all times for such situations. USB Input Also, when the physical key is not available, there is a USB input on the bottom part of the smart locks (besides the key input) that enables you to connect a power bank to wake up the lock and unlock it.

The touchscreen of the lock seems reflective. Can fingerprints be left on the lock, making it easy to guess the password?

Simpled locks come with an imaginary PIN code feature that allows you to enter other digits before/after your actual PIN. This is optional but will help to deter hackers and prevent your PIN code from being exposed. Also, with the security lockout mode, it is even more difficult to guess your PIN cod

What is the warranty period for Simpled smart door locks?

All product(s) sold by simpled.tech or our authorised dealers come with a 24-month local warranty to the original purchaser Valid from the date of purchase

Your question not here? Call +44 20 7096 0094 (Monday to Friday, 9am to 5pm) or send us a photo.

Configure yours£209.99

In good company

396 reviews of simpled.uk on Trustpilot. 4.8 out of 5.

4.8

out of 5

Excellent on Trustpilot · 396 reviews

  • 5 star81%
  • 4 star8%
  • 3 star2%
  • 2 star1%
  • 1 star7%

The newest of our own customer reviews, as written. Read them all

  • Great company that care. I used them on my first airBnB property and have now rolled them out to two more. The after sales service is what really stands out. Advice, spare parts, tech support all 100% ?

    Owen Werakso · January 2026

  • Very reliable and support is fantastic. They have everything in order and you can feel it in their service and aftermarket. Different and refreshing with great products, highly recommended.

    Elias Gadgets (Gary) · December 2025

  • Great smart lock. Absolutely brilliant after sales service.. I had some questions during installation. Simpled got back to me very quickly and talk me through it.

    foysol hussain · November 2025
Read all 396 reviews on Trustpilot (opens in a new tab)
  • A London company
  • 60-day money-back guarantee
  • 24-month warranty
  • Free UK delivery

Which Slim lock is for you?

Choose up to four to compare

Pick two to four locks. Tap one to add it or take it out; to add a fifth, take one out first.

Simpled models compared, up to four at a time. Each column is one model; prices are today's shop prices.
Model
Simpled EF Slim Series Smart Lock - Silver
EFSimpled EF Slim Series Smart Lock - Silver£209.99In stock
SS Slim Series Smart Lock - Black, with Wi-Fi
SSSS Slim Series Smart Lock - Black, with Wi-Fi£349.99
Simpled WF-SP Weatherproof Slim Series Smart Lock
WFSimpled WF-SP Weatherproof Slim Series Smart Lock£180.00For gates and narrow frames
Simpled DWF-SP Double-Side Weatherproof Smart Lock
DWFSimpled DWF-SP Double-Side Weatherproof Smart Lock£255.99Weatherproof, smart on both sides
Simpled DFF-SP Double-Sided Smart Lock
DFFSimpled DFF-SP Double-Sided Smart Lock£299.99Smart access on both sides
SF Slim Smart door lock - Matte Black
SFSF Slim Smart door lock - Matte Black£249.99
TF Smart Lock (Our narrowest model - Ideal for bifold doors)
TFTF Smart Lock (Our narrowest model - Ideal for bifold doors)£280.00Our narrowest, for bifold doors
Leverline Smart Fingerprint Door Handle - Matte Black
LFLeverline Smart Fingerprint Door Handle - Matte Black£139.99In stock
Simpled GF Glass Door Lock
GFSimpled GF Glass Door Lock£209.99Made for glass doors
MF Euro Motorised Cylinder (Fingerprint Keypad Included)
MFMF Euro Motorised Cylinder (Fingerprint Keypad Included)£269.99The motorised upgrade
Simpled Night Latch Smart Lock RF-SP
RFSimpled Night Latch Smart Lock RF-SP£164.99Smart access for night-latch doorsIn stock
Pricing & General
ColourSilverBlackSilverSilverSilverBlackBlackBlackBlackBlackSilver
Usage & Environment
Mostly used onMultipoint locks, Spindle LocksMultipoint locks, Spindle LocksSpindle LocksSpindle LocksMultipoint locks, Spindle LocksMultipoint locks, Spindle LocksMultipoint locks, Spindle LocksInternal doors, Office doors, Flat doors, Spindle LocksGlass door, Wooden doorEuro Cylinders, Multipoint locksEasy Night latch Replacement
External Weather ResistanceYesYesYesYesYesYesYesYesYesYesYes
Internal Weather ResistanceNoYesYesYesNoNoNoNoNoNoYes
Connectivity & Smart Ecosystem
Wi-Fi Bridge AvailabilityExternal Gateway RequiredBuilt-in (No external gateway needed)External Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway RequiredExternal Gateway Required
Unlock Remotely (With Gateway)YesYesYesYesYesYesYesYesYesYesYes
Alexa/Google Home (Gateway Sold Separately)YesYesYesYesYesYesYesYesYesYesYes
Access Methods
Smartphone AccessYesYesYesYesYesYesYesYesYesYesYes
Passcode AccessYesYesYesYesYesYesYesYesYesYesNo
Timed CodeYesYesYesYesYesYesYesYesYesYesNo
FingerprintYesYesYesYesYesYesYesYesYesYesYes
Card ReaderYesYesYesYesYesYesYesYesYesYesYes
Mechanical KeyYesYesYesYesYesYesYesYesYesYesYes
Access Management & Logs
Manage, Schedule, Share and Delete access in the appYesYesYesYesYesYesYesYesYesYesYes
Log RecordsYesYesYesYesYesYesYesYesYesYesYes
Installation & Warranty
Installation Time45m45m45m45m45m45m45m30m45m30mLess than 5
Installation Difficulty LevelMediumMediumMediumMediumMediumMediumMediumEasyMediumEasyEasy
Simpled Warranty2 years2 years2 years2 years2 years2 years2 years2 years2 years2 years2 years

2 of 4 selected

Both carry the 60-day money-back guarantee and the 24-month warranty. Compare all our locks

Manuals & guides

Downloads

Read up on the EF Slim Series Smart Lock before it arrives.

Fitting it yourself

Installation Videos

Watch the fit before you start.

  • Simpled EF-SP Installation Video

  • Explore the Future of Smart Locks

Goes well with

Buy it with

Accessories picked to go with the EF Slim Series Smart Lock.

Simpled EF Slim Series

Come and go. Never worry.

Sixty seconds tells you if it fits. Sixty days tells you if it's right. Two years, we've already promised.

  • Rated Excellent, 4.8/5 on Trustpilot