Interlock Mercury Smart Locks

Browse all 17 products Filter by brand, price and features

Looking for a smart lock Singapore homeowners can trust? Interlock Mercury is Interlock's own smart lock brand, serving HDB main doors, condo entrances and landed homes. Interlock has been Singapore's dedicated lock specialist since 2008.

The Interlock Assurance

Buy your digital lock with less risk.

Compatibility Checked No-Fit, No-Fee 30-Day Workmanship Guarantee Learn about our assurance

17 products

Buying guide Top picks and how to choose

Interlock Mercury smart locks are known for their 3D face recognition, advanced palm vein unlock and smart mobile app access through the Tuya app, so you can unlock remotely, share temporary access and monitor your door from your phone.

The Mercury X6 is our flagship Wi-Fi enabled model, a fully automated mortise lock combining facial recognition, palm vein and fingerprint biometrics with app control built directly into the lock, no separate bridge or gateway needed. Manage access logs and receive mobile notifications straight from your phone.

All orders include professional installation by our certified in-house team, free islandwide delivery and lifetime technical support. We handle door compatibility checks, fitting and aftercare. No third-party contractors.

Browse main door smart locks, gate smart locks and door-and-gate bundles below. Need help choosing the right model? Compare all Mercury models

The Interlock Assurance

More Than Just Buying a Digital Lock

We help make sure the lock is suitable for your entrance, properly installed, and supported after installation.

No-Fit, No-Fee Before Installation

We check compatibility before installation. If the planned lock cannot be properly installed onsite and we cannot provide a suitable compatible alternative, you will not be charged for the unsuccessful installation.

30-Day Workmanship Guarantee After Installation

If an issue is confirmed to have been caused by our installation workmanship within 30 days, we will return and rectify the workmanship issue without an additional workmanship charge.

Product warranty coverage varies by product and brand. Please refer to the individual product page for the applicable warranty.

Read the Interlock Assurance

Compare the range

Every Mercury lock, side by side

Every price includes professional installation. Pick door or gate, then compare everything that matters, from ways to unlock to battery life.

Mercury X2

The Minimalist

Simple, offline entry. No app, no Wi-Fi, nothing to set up.

Fingerprint, PIN, cardNo app neededAA batteries

$549$649Installation included

View Mercury X2

Mercury X5

The Family Pick

Multi-generation homes. Contactless face and palm unlock with a big, easy screen.

3D face + palm vein4.5 inch touchscreenEasy for all ages

$699$799Installation included

View Mercury X5

Mercury X6

Most popular

The Flagship

Design-led homes. Ultra slim, with one-time guest codes and up to 250 PIN codes.

19mm ultra slimUp to 250 PIN codesOne-time guest codes

$849$899Installation included

View Mercury X6

Mercury V6

The Always-On

Never run flat. Dual batteries keep it running while one charges, plus a duress code.

Dual batteryDuress code4.5 inch screen

$849$999Installation included

View Mercury V6

Full specs

Model
Mercury X2$549
Mercury X5$699
Mercury X6$849
Mercury V6$849
Overview
Best for
Offline simplicity
Multi-generation homes
Sleek, modern doors
Backup power peace of mind
Ways to unlock
3D face recognition
—
Up to 50, shared with palm vein
Up to 50
Up to 100, shared with palm vein
Palm vein
—
Shared with face
Up to 50
Shared with face
Fingerprint
Up to 50
Up to 100
Up to 100
Up to 100
PIN codes
Up to 200
Up to 100
Up to 250
Up to 100, shared with cards
Cards and tags
Up to 200
Up to 100
Up to 100
Shared with PIN codes
App and remote unlock
—
Mechanical key backup
Guest codes
—
Scheduled
One-time and scheduled
Scheduled
Screen and intercom
Indoor screen
—
4.5 inch touchscreen
4 inch display
4.5 inch screen
Video intercom
—
Two-way audio, one-way video
Two-way audio, one-way video
Two-way audio, one-way video
Built-in doorbell
Power
Battery
4x AA batteries
Rechargeable pack
Rechargeable pack
Dual rechargeable, runs on one while the other charges
Battery life
Low battery alerts
Up to 4 months
Up to 4 months
Up to 4 months
USB-C emergency power
Build and security
Lock type
Mortise
Mortise
Mortise
Electronic mortise
Profile
Lever handle
55mm, tapered
19mm, ultra slim
50mm, streamlined
Material
Aluminium
Aluminium alloy
Aluminium alloy
ABS
Security
Auto lock, double lock
Auto lock, double lock
Auto lock, double lock
Auto lock, double lock, duress code
Smart home
App
None, fully offline
Tuya Smart, Wi-Fi
Tuya Smart, Wi-Fi
Tuya Smart, Wi-Fi
Syncs with a Mercury gate lock
Yes, G3 or G4
Yes, G3 or G4
Yes, G3 or G4
—
Peace of mind
Warranty
1 year onsite
1 year onsite
1 year onsite
1 year onsite
Installation
Included
Included
Included
Included

Not sure which fits your door or gate? Send us a photo and we'll recommend the right model. Need door and gate together? See the Mercury Home Packages.

Free Fit Check

Why Interlock Mercury Smart Locks?

17 years in Singapore. Over 15,000 installations across HDB flats, condos and landed homes. The only dedicated smart lock specialist with a certified in-house team and lifetime technical support.

We do not outsource installations. Every job is handled by our own certified team, from compatibility check to fitting to aftercare.

Interlock Mercury is our own homegrown brand. The only smart lock line built from scratch for Singapore homes, Singapore door sizes and the standards Singapore homeowners expect.

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