• SV40 Front View
  • SV40 Side View
  • SV40 Finger Vein Tech
  • SV40 Auto Lock Tech
  • SV40 Transparent Look
  • SV40 Passcode Door Open
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Lockin SV40 | Effortless access with finger-vein tech

For Families: 
SV40 is a smart lock everyone can use — even kids and grandparents. Just wave your hand to unlock. It auto-locks when you leave, so there’s nothing to forget.

For Tech Enthusiasts: 
SV40 brings finger-vein security into an affordable, stylish push-pull design. Compact, quiet, and smart-home ready — it just works.

For Airbnb Hosts: 
SV40 keeps guest check-ins simple. Hands-free access, app control, and a clean modern look that fits any door. No keys. No codes to remember.

For Builders: 
SV40 is a great mid-tier option for homes that need function and flair. It installs cleanly, works smoothly, and gives clients something to talk about.

Color: Grey
Professional Installation
$1,019.00
$1,019.00
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$1,019.00
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Finger Vein Smart Lock SV40

If your fingerprint's no good, use your finger vein.

For the whole family | Safer vein detection | Fully automated and convenient.

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  • icon All-in-One Smart Lock: Finger vein, PlN code, NFC, Mechanical key, and APP
  • icon Full-auto mortise, ensuring quiet operation at all times.
  • icon Finger vein recognition technology, suitable for the elderly and children.
  • icon Supports Mi Home

Get rid of fingerprints. Finger veins are good for the whole family.

Finger vein recognition is suitable for all kinds of people, even the fingerprint is not good for the elderly, children, special people can be accurately and quickly identified with finger veins, the whole family is good to use.

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Six-fold security protection to keep your home safe

  • Security 1

    Indoor double sensor door opening

    Indoor door opening requires double sensing to unlock the door after key + handle sensing area, automatic anti-cat-eye unlocking, anti-pet accidental unlocking

  • Security 2

    electronic reverse lock

    Only the administrator can open the electronic back-lock, so you can be more at ease at home alone, and children are not afraid of mistakenly unlocking the door.

  • Security 3

    Anti-Black Box Unlocking

    Designed with electromagnetic protection against interference from small black boxes

  • Security 4

    Void code to prevent prying eyes

    Maximum 16-digit dummy code can be entered to effectively prevent prying eyes.

  • Security 5

    Emergency knob unlocking

    Emergency emergency unlocking, such as fire, earthquake, panel damage, and do not have to worry about being locked at home

  • Security 6

    UnionPay Certified Encryption Chip

    High-level encrypted NFC chip for data security

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    Secure

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    Versatile

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    Stable

Finger Vein Detection
Deep biometrics for greater security

Finger vein detection is hidden in the user's skin under the finger vein blood vessel image deeper biological information, difficult to steal and difficult to copy; with uniqueness, even identical twins finger vein information is not the same, higher security.

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NO MORE
FINGERPRINT FRUSTRATION

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    Seniors Faded Fingerprints

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    Children Tender Fingerprints

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    Wet

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    Chap

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    Worn Fingerprints

Door lock abnormality Timely alarm

Local Alerts + Remote App Notifications

  • Alarm Function 1

    leave the door ajar

  • Alarm Function 2

    unclosed

  • Alarm Function 3

    Trial and error.

  • Alarm Function 4

    The door lock was broken.

  • Alarm Function 5

    Low battery

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Sentinel Mode
Stay Secure While You’re Away

The Lockin SV40 alerts you if the door is opened from the inside while you’re away, adding an extra layer of protection to keep your home safe.

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  • Alarm Function 1

    emergency power

    Type-C port at the bottom of the panel for emergency unlocking

  • Alarm Function 2

    Extra long battery life

    8x5 batteries, 12 months of battery life based on opening and closing the door 10 times a day

    *Data from Deerhunter Labs

  • Alarm Function 3

    Alloy Panel

    Front and rear panels are made of integrated alloy frame, the same level of material used in automobile manufacturing.

Specification

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Specification

  • Access Methods

    Finger Vein / PIN Code / APP / NFC Card / Mechanical Key

  • Dimensions

    L385 * W73 * H22 mm

  • Color

    Dark Grey

  • Cylinder Type

    Class C

  • Emergency Power Supply

    Type-C

  • APP

    MI Home

  • Certification

    CE

  • PIN Code Length

    6 digits, max 16 digit with Decoy PIN Code Supported, Up to 50 Groups

  • Operating Temperature

    -20°C - 55°C

  • Compatible Door

    Wood Door & Burglar-Proof Door

  • Door Thickness

    100 Groups

  • Finger Veins

    Wood Door & Burglar-Proof Door

  • Power Supply

    AA Batteries*8, 12 Months Lifetime

  • Communication

    Bluetooth / NFC

  • Doorbell

    Supported, Built-in doorbell

  • Alerts

    Door Ajar, Several Incorrect Access Attempts, Tampering Attempts, Low Battery

  • Auto-Lock

    Supported, 0.5s Auto-Lock

  • Double Authentication

    Supported

  • Handle

    Push-and-Pull

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    Finger Vein Recognition

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    Fully-Auto Mortise

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    Built-in Doorbell

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    Decoy PIN Code Supported

Can't Decide?

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