A high-end, hyper-realistic architectural photography shot of a sleek Mercury digital door lock on a premium dark wood designer door. The hand is held open and hovering 10cm directly above the top edge of the lock hardware, aligning with an upward-angled palm-vein camera. A sophisticated blue holographic light beam projects upward from the top end of the lock to scan the elevated palm. The hand is positioned in the upper third of the frame, clearly separated from the device to showcase the contactless metho

Smart Lock Singapore — Interlock Mercury

Singapore's top homegrown smart lock brand. Built for HDB, condo and landed homes, with door-and-gate compatibility checks, professional installation, and local support from a digital lock specialist since 2008.

  • Local Singapore support team
  • Free Delivery & Installation
  • No Hidden GST Charges
Explore Models Not Sure? Get Free Advice
Seska L
★★★★★

"The Interlock Mercury Series is easy to use and reliable. Palm Vein access is fast and it makes daily entry much more convenient."

- Seska L

Why Smart Locks

Why Singapore Homeowners Are Switching to Smart Locks

A smart lock is not just about removing keys. For many Singapore homes, it solves everyday access problems — from children forgetting keys, to elderly parents struggling with fingerprints, to managing a main door and metal gate together.

When your kids or family members forget their keys

Mercury smart locks give your household multiple ways to unlock, including fingerprint, PIN, card, face recognition or palm vein access depending on the model.

When fingerprint access is unreliable for elderly users

Selected Mercury models support face recognition or palm vein access, giving seniors an easier way to enter without relying only on fingerprint scanning.

When helpers, tenants or guests need temporary access

For compatible app-connected models, you can manage users and temporary access more conveniently, instead of duplicating physical keys.

When you want to know who is at your door or gate

Selected Mercury models include camera, viewer or intercom functions, so you can check visitors and deliveries more conveniently from your lock or app.

When you have both a wooden door and metal gate

Mercury door and gate models can be planned together as one entrance setup, with Advanced Sync Module™ support available for selected bundle configurations.

When you want fewer worries about lost keys

Instead of changing cylinders or cutting new keys, you can remove or update digital access methods such as PINs, cards or app users where supported.

Find Your Mercury

Which Mercury Smart Lock Is Right for Your Singapore Home?

The best smart lock depends on your home layout, door condition, gate setup and how your family enters every day. Start with the situation that sounds closest to your home.

This section helps Singapore homeowners compare Interlock Mercury smart door locks, smart gate locks and door gate lock bundles based on common home situations such as HDB flats, condos, landed homes, main door access, gate access, visitor awareness and no-app daily entry.

Why Interlock Mercury Is Built for Singapore Homes

Not just another imported smart lock — Mercury is planned around Singapore door layouts, gate setups, local installation needs and everyday family access.

Gate Lock Innovation for Singapore Homes

Gate Lock Innovation for Singapore Homes

Mercury is built with Singapore gate users in mind, not just main doors. Selected Mercury gate models offer advanced features such as Dual Camera viewing, parcel awareness and DualKey™ access from both inside and outside the gate.

Practical Access for the Whole Family

Practical Access for the Whole Family

Mercury models are designed around different household needs — from simple fingerprint, PIN and card access to face recognition, palm vein access, visitor viewing and app-connected features on selected models.

Advanced Sync Module™ Support

Advanced Sync Module™ Support

Mercury door-and-gate bundle configurations support Advanced Sync Module™, helping compatible models achieve two-way dual syncing for a smoother daily unlock experience.

Local Support by a Digital Lock Specialist Since 2008

Local Support by a Digital Lock Specialist Since 2008

Mercury is supported by Interlock’s local team, with professional installation, setup guidance and after-sales support from a Singapore digital lock specialist.

Built Around Door & Gate Layouts

Built Around Door & Gate Layouts

Most Singapore homes do not just have one door. Mercury is planned around real HDB, condo and landed entrance setups — including main wooden doors, metal gates, door gaps and gate clearance.

Compatibility Checked Before Installation

Compatibility Checked Before Installation

Smart lock fit depends on your actual door thickness, frame, existing lock cut-out and gate clearance. Our team checks your photos before recommending the suitable Mercury model.

Browse Smart Locks by Interlock Mercury

1 8
Compare all Mercury Smart Locks→ 

Compare Mercury Smart Lock Model Specs

Choose the right Mercury model for your home, budget, and preferred access methods.

Interlock Mercury X6 smart digital door lock aluminium alloy body - tempered glass touch keypad - stainless steel latch Matte Black - Facial & Palm Vein Recognition | Interlock

Mercury X6

The Guardian

$899

The Design Enthusiast.
Discerning homeowners who want their door to reflect a modern, luxurious lifestyle.

Best For
Designer Aesthetic & Elite Tech
Main Biometrics
Palm Vein + Face + Fingerprint/Card/PIN
Video / Door Viewer
4 inch
Camera & Night Vision
Wide Angled + Night Vision Enabled
Dual Sync
✔
App / Smart-home
Tuya Smart Life
Battery & Emergency Power
Single Lithium Battery + USB Backup Port
Manual Key
✔
Access Methods (Total)
10
PIN Types
Normal + OTP + Periodic PIN
Design Profile
Ultra-Slim & Curved
Body Material
Aerospace-Grade Aluminum
Security
Anti-pry + tamper alarm + visitor records
Interlock Mercury V6: The Next Gen Smart Digital Lock

Mercury V6

The Visionary

$999

The Tech Wizard.
Smart Tech Gurus who want the best features (Face ID + Dual Battery).

Best For
Next Gen Tech Visionaries
Main Biometrics
Palm Vein + Face + Fingerprint/Card/PIN
Video / Door Viewer
4.5 inch
Camera & Night Vision
Wide Angled + Night Vision Enabled
Dual Sync
✔
App / Smart-home
Tuya Smart Life
Battery & Emergency Power
Dual Lithium Battery + USB Backup Port
Manual Key
✔
Access Methods (Total)
9
PIN Types
Normal + Periodic PIN (OTP ✘)
Design Profile
Streamlined & Balanced
Body Material
ABS (Acrylonitrile Butadiene Styrene)
Security
Anti-pry + tamper alarm + visitor records
Interlock Mercury X5 Smart door Lock with Facial Recognition and HD Door Viewer

Mercury X5

The Professional

$799

The Multi-Gen Household.
Ideal for homes with Seniors & Children whose fingerprints may be faded or hard to scan.

Best For
Multi-generational homes
Main Biometrics
Palm Vein + Face + Fingerprint/Card/PIN
Video / Door Viewer
4.5 inch
Camera & Night Vision
Wide Angled + Night Vision Enabled
Dual Sync
✔
App / Smart-home
Tuya Smart Life
Battery & Emergency Power
Single Lithium Battery + USB Backup Port
Manual Key
✔
Access Methods (Total)
9
PIN Types
Normal + Periodic PIN (OTP ✘)
Design Profile
Ultra-Slim & Tapered
Body Material
Aluminum Alloy
Security
Anti-pry + tamper alarm + visitor records
Interlock Mercury X2 | Most Affordable Digital Lock

Mercury X2

The Minimalist

$649

The Modest Artisan
Homeowners seeking a simple, uncomplicated solution

Best For
Simple yet effective
Main Biometrics
Fingerprint/Card/PIN (No Palm / No Face)
Video / Door Viewer
—
Camera & Night Vision
—
Dual Sync
✔
App / Smart-home
—
Battery & Emergency Power
4x Alkaline Battery + USB Backup Port
Manual Key
✔
Access Methods (Total)
4
PIN Types
Normal Only (Periodic ✘ OTP ✘)
Design Profile
Lever Handle with Slick Design
Body Material
Aluminium Alloy
Security
Anti-pry + tamper alarm

Need help? Message us and we’ll recommend the best-fit Mercury model.

Your Mercury Smart Lock Installation, Step by Step

From photo assessment to lock handover, our team checks your actual door or gate condition before recommending and installing the suitable Mercury model.

Send Us Your Door or Gate Photos

≈ 15 min
Before recommending a Mercury smart lock, we first check your actual door or gate setup. This helps us avoid recommending a model that looks good online but may not fit properly on installation day.
  • Send clear front and back photos of your door or gate
  • Include the existing lock area, door frame and strike area
  • For gate setups, send the door-and-gate clearance photo too
Send Photos for Free Advice

Compatibility Check by Our Team

≈ 1 hours
Our team reviews your photos and checks the important fitment details before confirming which Mercury model is suitable for your home.
  • Door thickness, door gap and frame condition
  • Gate clearance, handlebar position and lock body space
  • Existing lock cut-outs that may need to be covered
Check My Door Compatibility Compare Mercury Models

Professional Installation

≈ 1-2 Hours
Once the model is confirmed, we will arrange a scheduled time and our installer will install the Mercury smart lock and make sure the locking action works smoothly with your door or gate.
  • Removal of the old lock where required
  • Proper fitting, alignment and strike plate adjustment
  • Locking and unlocking tested before handover
Ask About Installation Slots View Past Customer's Installations

Access Setup & User Guidance

≈ 20 Mins
After installation, we help you set up the main access methods so your household can start using the lock confidently.
  • Fingerprint, PIN, card, face or palm vein setup depending on model
  • App setup for compatible smart models
  • Basic user guidance for daily locking and unlocking
Install App for Iphone Install App for Android

Door + Gate Bundle Configuration

≈ 5 min
For Mercury door-and-gate bundles, we check how both locks should work together so your daily entry feels smoother.
  • Suitable pairing between Mercury door and gate models
  • Advanced Sync Module™ support for selected configurations
  • Door and gate usage explained during handover
Explore Door + Gate Bundles Ask About Advanced Sync Module™

Handover, Battery Care & Emergency Access

≈ 5 min
Before leaving, we explain the important usage and care points so you know what to do during daily use, low battery warnings or emergency situations.
  • Battery care and charging guidance
  • Emergency access methods explained
  • Basic troubleshooting and after-sales support & warranty information
Ask About After-Sales Support Check Warranty Details
1

Send Us Your Door or Gate Photos

≈ 15 min
Before recommending a Mercury smart lock, we first check your actual door or gate setup. This helps us avoid recommending a model that looks good online but may not fit properly on installation day.
  • Send clear front and back photos of your door or gate
  • Include the existing lock area, door frame and strike area
  • For gate setups, send the door-and-gate clearance photo too
Send Photos for Free Advice
2

Compatibility Check by Our Team

≈ 1 hours
Our team reviews your photos and checks the important fitment details before confirming which Mercury model is suitable for your home.
  • Door thickness, door gap and frame condition
  • Gate clearance, handlebar position and lock body space
  • Existing lock cut-outs that may need to be covered
Check My Door Compatibility Compare Mercury Models
3

Professional Installation

≈ 1-2 Hours
Once the model is confirmed, we will arrange a scheduled time and our installer will install the Mercury smart lock and make sure the locking action works smoothly with your door or gate.
  • Removal of the old lock where required
  • Proper fitting, alignment and strike plate adjustment
  • Locking and unlocking tested before handover
Ask About Installation Slots View Past Customer's Installations
4

Access Setup & User Guidance

≈ 20 Mins
After installation, we help you set up the main access methods so your household can start using the lock confidently.
  • Fingerprint, PIN, card, face or palm vein setup depending on model
  • App setup for compatible smart models
  • Basic user guidance for daily locking and unlocking
Install App for Iphone Install App for Android
5

Door + Gate Bundle Configuration

≈ 5 min
For Mercury door-and-gate bundles, we check how both locks should work together so your daily entry feels smoother.
  • Suitable pairing between Mercury door and gate models
  • Advanced Sync Module™ support for selected configurations
  • Door and gate usage explained during handover
Explore Door + Gate Bundles Ask About Advanced Sync Module™
6

Handover, Battery Care & Emergency Access

≈ 5 min
Before leaving, we explain the important usage and care points so you know what to do during daily use, low battery warnings or emergency situations.
  • Battery care and charging guidance
  • Emergency access methods explained
  • Basic troubleshooting and after-sales support & warranty information
Ask About After-Sales Support Check Warranty Details

Real Singapore Installations

Mercury Smart Locks Installed in Singapore Homes

See real Interlock Mercury installations across Singapore — from replacing older digital locks to complete door-and-gate upgrades for HDB homes.

  1. Interlock Mercury X5 smart door lock replacing Samsung lock at Sengkang
    Interlock Mercury X5 replacing an older Samsung digital lock at Sengkang.
    Sengkang · Lock Replacement

    Mercury X5 Replacing Samsung Lock

    Location
    Location: Sengkang
    Model installed
    Model: Interlock Mercury X5

    Why this setup?

    The existing Samsung digital lock was replaced with a newer Mercury smart door lock for a more updated main door access experience.

    What this shows

    Mercury X5 is a strong replacement option for homeowners upgrading from older digital locks and wanting smarter access methods such as face, palm vein, PIN and app-connected features.

    View Mercury X5
  2. Interlock Mercury X6 and G3 smart door and gate lock bundle installed at Bendemeer
    Interlock Mercury X6 and G3 smart door and gate lock bundle installed at Bendemeer.
    Bendemeer · Door + Gate

    Mercury X6 + G3 Bundle Installation

    Location
    Location: Bendemeer
    Model installed
    Model: Mercury X6 + G3 Bundle

    Why this setup?

    The homeowner chose a complete Mercury door-and-gate upgrade instead of treating the main door and metal gate as separate locks.

    What this shows

    A Mercury bundle is ideal for homes that want smoother daily access across both the main door and gate, with compatible models planned together from the start.

    View Bundle
  3. Interlock Mercury G3 smart gate lock installed at Bukit Batok HDB
    Interlock Mercury G3 smart gate lock installed at Bukit Batok HDB.
    Bukit Batok · HDB Gate

    Mercury G3 Smart Gate Lock Installation

    Location
    Location: Bukit Batok HDB
    Model installed
    Model: Interlock Mercury G3

    Why this setup?

    The homeowner wanted a smart gate lock that supports convenient access while improving visitor and parcel awareness at the gate.

    What this shows

    Mercury G3 is suitable for HDB gate setups where homeowners want more than basic unlocking, especially for visitor viewing and delivery awareness.

    View Mercury G3
  4. Interlock Mercury G4 smart gate lock installed at Punggol
    Interlock Mercury G4 smart gate lock installed at Punggol.
    Punggol · Smart Gate

    Mercury G4 Smart Gate Lock Installation

    Location
    Location: Punggol
    Model installed
    Model: Interlock Mercury G4

    Why this setup?

    The homeowner wanted a gate-focused smart lock setup with stronger access control and practical backup access.

    What this shows

    Mercury G4 is suitable for homeowners who want enhanced gate security, including DualKey™ access on selected configurations to reduce lockout concerns.

    View Mercury G4
  5. Interlock Mercury X2 smart door lock replacing Bosch lock at Woodlands HDB
    Interlock Mercury X2 replacing Bosch lock at Woodlands HDB.
    Woodlands HDB · Lock Replacement

    Mercury X2 Replacing Bosch Lock

    Location
    Location: Woodlands HDB
    Model installed
    Model: Interlock Mercury X2

    Why this setup?

    The existing Bosch lock was replaced with Mercury X2 for a simpler, straightforward smart door lock setup.

    What this shows

    Mercury X2 is suitable for homeowners who want practical fingerprint, PIN and card access without depending on app control for basic daily unlocking.

    View Mercury X2

This section shows real installation examples of Interlock Mercury smart locks in Singapore homes, including Mercury X5 replacing a Samsung lock at Sengkang, Mercury X6 and G3 bundle at Bendemeer, Mercury G3 at Bukit Batok HDB, Mercury G4 at Punggol, and Mercury X2 replacing a Bosch lock at Woodlands HDB.

Digital Lock Assessment

Personalised Lock Recommendations

Struggling to find the perfect lock for your home?

Every home is different and so are your doors. In just a minute, tell us a little about your home setup and what matters most to you.

Our team will match you with the best smart lock options and send you a quick digital door lock recommendation with pricing guidance.

Get My Free Assessment

What Is a Smart Lock?

Singapore has over 1.4 million HDB flats. Most still use a metal key. A smart lock changes that.

A smart lock is a keyless door lock that connects to your home Wi-Fi, giving you control beyond your front door.

Unlike a standard digital lock — which unlocks with fingerprint, PIN, or card but has no internet connection — a smart lock adds:

  • Remote unlock from anywhere via smartphone app
  • Real-time push notifications when your door is opened
  • Access logs showing who entered, when, and by which method
  • Temporary PINs for guests, cleaners, and delivery riders
  • Voice control via Google Assistant or Amazon Alexa - Automation — trigger scenes like "unlock at 8am on weekdays" or "lock when I leave home"

All Interlock Mercury door locks (X6, V6, X5) are smart locks. The Mercury X2 is our entry-level option for homeowners who prefer a simpler digital lock without app connectivity.

What is the Best Smart Lock?

The best smart door lock is one that combines advanced security, multiple access methods, and real-time monitoring in a single system.

Recommended: Interlock Mercury V6

Interlock Mercury V6 Smart Door Lock

The Interlock Mercury V6 is a strong example of a “best smart door lock” because it integrates high-end features into one device:

  • 3D face recognition with liveness detection for secure, contactless access
  • Built-in HD camera with night vision for door monitoring and visitor verification
  • Multiple unlock methods including fingerprint, PIN, app control, and key backup
  • Real-time alerts and remote access for better home security control
  • USB-C emergency power support to prevent lockouts

These features provide both security and everyday convenience, making it well-suited for Singapore homes, especially HDBs and condos.

In short: The best smart door lock is one that offers advanced biometrics, remote monitoring, and reliable backup—and the Interlock Mercury V6 delivers all of these in a single system.

Looking for other digital lock brands? Browse our full digital lock Singapore range →

FAQ

Is a smart lock better than a digital lock for Singapore homes?

For most Singapore homeowners, yes — if you want remote access, push notifications, and guest PIN management. A digital lock is sufficient if you only need keyless entry without app features. The Interlock Mercury X2 is our digital-only option; the V6, X5, and X6 add full smart features. Contact us if you're unsure which suits your home.

Is the Interlock Mercury smart lock suitable for HDB flats?

Yes. All Interlock Mercury door locks are designed and tested for HDB main doors. We also offer synchronised door-and-gate bundles specifically for HDB homes with front gates. Our team does a door compatibility check before every installation.

How much does a smart lock cost in Singapore?

Interlock Mercury smart lock prices in Singapore range from$549 or the entry-level X2 to $899 for the flagship X6, with complimentary professional installation included on all models.
Compare Mercury models →

What makes Interlock Mercury the best smart lock in Singapore?

Interlock Mercury is Singapore's most advanced smart lock series with 10-in-1 access methods including facial, palm vein recognition, RFID card, smartphone app, and mechanical key backup. Designed specifically for Singapore's climate with professional installation and local warranty support.

What is the best smart lock for HDB in Singapore?

For HDB main doors, the Interlock Mercury X6 is the most complete option — palm vein + facial recognition, built-in viewer, two-way intercom and full app control. For HDB door + gate together, the Mercury bundle (X6 + G3 or V6 + G2) gives you both locks on one app.

How do I choose between Mercury X6, V6, X5, and X2 for my home?

Pick based on your priorities. X6 is best if you want the most complete “flagship” setup (premium biometrics + viewer experience + smart features). V6 suits families who want flagship security and convenience at a more value-led tier. X5 is ideal for multi-generation households where ease-of-use matters most. X2 fits buyers who want a simpler, budget-friendly digital lock without going heavy on smart features.

 Is the Interlock Mercury smart door lock suitable for HDB flats?

Yes, the Interlock Mercury digital door lock is fully compatible with HDB flats, condominiums, and landed properties. Our professional installation team ensures proper fitting to standard Singapore door preparation.

Do Mercury locks need Wi-Fi to work, and which features require the app?

Core unlocking (biometrics, PIN, card, key—depending on model) works directly on the lock. Wi-Fi/app features are mainly for smart control like remote management, viewing activity history, and managing users or PIN types (feature availability depends on model). If you prefer a simpler setup, choose the Mercury X2, designed to be more “offline-first.”

Do Interlock Mercury locks support guest access like one-time PINs and time-limited PINs?

Yes. Selected Mercury models support temporary/periodic PINs (time-limited access for helpers or visitors). The Mercury X6 also support one-time PINs, which are useful for deliveries or short visits. Choose a model based on how often you need to create and manage guest access.

What happens if the battery is low or fully depleted? Can I still unlock the door?

Mercury locks are designed to reduce lockout risk with low-battery alerts and an emergency USB (USB-C) backup power option. If the battery runs out, you can use a power bank via the emergency port to power the lock temporarily and unlock.

Can the Interlock Mercury smart lock withstand Singapore's humidity?

Absolutely. The Interlock Mercury digital door lock is engineered and tested for Singapore's tropical climate with high humidity resistance. All electronic components are protected, ensuring reliable performance year-round with our local warranty coverage.

How much does Interlock Mercury digital door lock installation cost?

Interlock Mercury smart door lock comes with complimentary professional installation across Singapore. Our certified technicians handle the complete setup including lock removal of your old lock, installation, programming and user training at no additional cost.

Your Door Deserves More Than a Key

Experience the peace of mind that comes with Singapore's most trusted digital lock specialists. Since 2008, we've secured over 15,000 Singapore homes with smart locks, expert installation, and unmatched local support. Don't settle for ordinary security when extraordinary protection is just a click away.

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