17+ Years of Home Security

Digital Lock Singapore – Door & Gate Lock Specialists Since 2008

Interlock helps homeowners choose the right digital lock based on compatibility, household needs and everyday use.

  • Compatibility Checked Before Purchase
  • No-Fit, No-Fee
  • 30-Day Workmanship Guarantee
Interlock Mercury X6 smart door lock and Mercury G4 gate lock
The Interlock Compatibility-First Guarantee

Check first. Then buy.

Buying a digital lock shouldn't require you to become a digital lock expert. Send us your door and gate photos and we'll tell you exactly what fits, what to avoid, and your installed price. Free, before you spend anything.

  • Free Fit Check Before You Buy Send your door and gate photos before you buy. We check fitment, clearance and installation requirements first, so you're never guessing.
  • No-Fit, No-Fee If the recommended lock cannot be properly installed onsite and we cannot offer a suitable alternative, you will not be charged for the unsuccessful installation.
  • Upfront Installed Pricing Know your product cost and installation cost together before you commit. No surprises after our installer arrives.

Why Homeowners Trust Interlock

Three real customer experiences. Three different reasons homeowners choose Interlock.

Andy Teo review photo 1
14
★★★★★ Google Review
“Alex took his time to explain what to expect and which lock set was suitable for our place. The installation was clean, precise and professional.”
The part that stood out

When a syncing issue appeared later, one message was enough. Alex responded immediately and personally went down to help resolve it, even during a thunderstorm.

Andy Teo Mercury X6 + G3 Bundle + Letterbox Lock
Read full review
We recently engaged Interlock to install Mercury bundle X6 door lock, a G3 gate lock, and a letterbox lock at our place, and the experience was excellent from start to finish.

They may not have a physical shop but Alex took his time to explain to us on what to expect and which lock set suitable for our place. The technician arrived on time and did a fantastic job with the installation—the work was clean, precise, and professional and they paid attention to details, which gave us confidence in the quality of their service. They took the time to explain how everything worked and ensured we were completely satisfied before leaving.

If you’re looking for a reliable team that delivers high-quality work and great service, I highly recommend Interlock!

Adding to the review, the after service was fantastic. We had a slight issue with syncing the door and the gate, just one quick message, and Alex immediately replied and tried his best to help and even drop by personally to attend to the problem.

Just wanted to say thank you and really appreciate the great work you did last night even it was having a thunderstorm. Your effort, dedication, and attention to detail truly made a difference. Everything was handled smoothly and professionally. Great job and thank you again for the hard work!
FILE 01 Trusted Advice & After-Sales
Andy Teo review photo 1
14
★★★★★ Google Review
“Alex took his time to explain what to expect and which lock set was suitable for our place. The installation was clean, precise and professional.”
The part that stood out

When a syncing issue appeared later, one message was enough. Alex responded immediately and personally went down to help resolve it, even during a thunderstorm.

Andy Teo Mercury X6 + G3 Bundle + Letterbox Lock
Read full review
We recently engaged Interlock to install Mercury bundle X6 door lock, a G3 gate lock, and a letterbox lock at our place, and the experience was excellent from start to finish.

They may not have a physical shop but Alex took his time to explain to us on what to expect and which lock set suitable for our place. The technician arrived on time and did a fantastic job with the installation—the work was clean, precise, and professional and they paid attention to details, which gave us confidence in the quality of their service. They took the time to explain how everything worked and ensured we were completely satisfied before leaving.

If you’re looking for a reliable team that delivers high-quality work and great service, I highly recommend Interlock!

Adding to the review, the after service was fantastic. We had a slight issue with syncing the door and the gate, just one quick message, and Alex immediately replied and tried his best to help and even drop by personally to attend to the problem.

Just wanted to say thank you and really appreciate the great work you did last night even it was having a thunderstorm. Your effort, dedication, and attention to detail truly made a difference. Everything was handled smoothly and professionally. Great job and thank you again for the hard work!
FILE 02 Professional Installation & Guidance
Marcus Khoo review photo 1
13
★★★★★ Google Review
“Franky arrived on time, did an excellent job installing the locks and made sure to clean up the mess.”
The part that stood out

Franky patiently helped the whole family register their access methods, connected the locks to the Tuya app and showed them how everything worked.

Marcus Khoo Mercury Door + Gate Smart Lock Setup
Read full review
Reached out to the company via WhatsApp and Alex responded quite promptly (even though it was CNY public holiday!). Answered my queries and arranged for installation.

Installer Franky arrived time, did an excellent job in installing the locks and made sure to clean up the mess. After that, he very patiently helped the family understand how to use the locks, answered our questions and also guided us in the registration of our faces, thumbprints, palm prints and wireless cards.

Franky also helped us connect the locks to the Tuya app and showed us how to use the app. Strongly recommend the services of this company and the digital locks.
FILE 03 Fast Response When It Matters
Fiona Ang review photo 1
★★★★★ Google Review
“Texted at 8.54am, installation guy arrived at 9.37am. All done by 10am.”
The part that stood out

Marlene identified a suitable replacement quickly and arranged for the technician to attend shortly afterwards, turning an urgent lock problem into a same-morning solution.

Fiona Ang Urgent Digital Lock Replacement
Read full review
Super fast response from Marlene. Within 30+mins of text, she was able advise the model to replace and got the installation guy to come by to replace the faulty lock. The guy who installed for me was very patient to explain how to register fingerprint, RFID n set pin etc.

Texted at 8.54am, installation guy arrived at 9.37am. All done by 10am. Kudos to the team for saving my day.
4.9 ★ on Google Real reviews from Interlock customers
View more Google reviews

Shop By Home Type

Find the Right Digital Lock for Your Home

Different homes have different doors, gates and installation requirements. Start with your entrance setup, then compare the locks that fit.

HDB Digital Locks

For HDB main doors and metal gates, compatibility often comes down to door thickness, gate clearance and whether you want both locks to work together. Browse digital door locks, gate locks and synchronised bundle options suited to common HDB entrance layouts.

Condo Digital Locks

Condo entrance doors vary between developments, including their existing mortise, door construction and installation requirements. We help you choose a digital door lock that fits the actual entrance instead of assuming every model will work.

Landed Home Digital Locks

Landed homes often use larger or heavier main doors and may have a separate gate, intercom or access-control system. We recommend the lock based on your actual door, frame and access setup.

Why Choose Interlock

Installed by Our Own Team icon

Installed by Our Own Team

Your lock is installed by our own team, keeping recommendation, installation and follow-up with Interlock

Local After-Sales Support icon

Local After-Sales Support

We guide you after installation and remain available for setup, troubleshooting and support when you need it.

Digital Lock Specialists Since 2008 icon

Digital Lock Specialists Since 2008

Digital locks have been our core business since 2008, across main doors, gates and specialist entrance setups.

Choosing a Digital Lock in Singapore

The right digital lock is not simply the one with the most features. It should fit your entrance, suit how your household prefers to unlock the door and be properly supported after installation.

Interlock carries digital door locks, digital gate locks and door-and-gate bundles across top brands in Singapore. Rather than assuming every lock works for every home, we narrow the options based on your actual entrance and requirements.

1. Check Compatibility First

Door thickness, mortise position, frame clearance and door-to-gate spacing can rule models in or out. Check what fits before comparing features.

2. Choose How You Want to Unlock

Fingerprint and PIN suit simple everyday use. Face or palm recognition can make entry hands-free, while RFID cards may suit children, helpers or staff.

3. Decide If You Need Smart Features

Wi-Fi or app-connected locks can add remote unlocking, temporary access and notifications. If you do not need these features, an offline digital lock may be simpler to own.

4. For HDB Homes, Plan the Door and Gate Together

If you have both a main door and metal gate, check the clearance between them and whether you want synchronised unlocking. Choosing both locks together helps avoid fitment conflicts.

5. Don't Overlook Installation and Support

Correct alignment and bolt movement matter as much as the electronics. You should also know how to use backup access and respond to low-battery warnings before the installer leaves.

Not sure which digital lock fits your home? Send us photos of your current door and gate for a compatibility assessment before choosing a model.

FAQ about Digital Locks in Singapore

What is the best digital lock in Singapore?

There is no single best digital lock for every home. The right choice depends on your door or gate, preferred access methods, whether you need smart features and your budget. For customers who want face recognition, palm vein access, built-in Wi-Fi and a door viewer, the Mercury X6 is one of our premium options.

What is the best smart lock in Singapore?

It depends on your door, gate and how your household wants to unlock. Our own Interlock Mercury range covers most Singapore homes: the X2 is fully offline (fingerprint, PIN and card, no app or Wi-Fi), the X5 adds 3D face and palm vein, and the X6 offers 7 ways to unlock. Every Mercury lock is installed and supported by our own team, and we check your door fits before you buy. Rated 4.9 on Google from 280+ reviews.

What is the difference between a digital lock and a smart lock?

A digital lock is any lock that uses electronic access methods, such as fingerprint, PIN, RFID card or face recognition, instead of a physical key. A smart lock is a type of digital lock that also connects to your phone or home network via Wi-Fi or Bluetooth, allowing remote access, access logs and smart home integration. All smart locks are digital locks, but not all digital locks are smart locks.

Read the full breakdown →

What should I look for before buying a digital lock?

Before buying a digital lock, check your door type, whether you have a front gate, the access methods you want, and whether you need installation advice. Choosing the right fit matters just as much as choosing the right features.

Are digital locks worth it in Singapore?

For most Singapore homes, yes. The main gains are convenience rather than burglar-proofing: no keys to carry or lose, temporary codes for guests, helpers or contractors, access logs, and remote unlocking on smart models.

The trade-offs are periodic battery changes (the lock warns you well before they run out) and occasional Wi-Fi drops on app-connected models. Choosing a lock with backup access methods and getting it properly installed avoids most problems.

Can I install a digital lock on any type of door?

Not every lock fits every door. Digital locks can go on wooden, metal and some glass doors, but each model has limits on door thickness, frame type and gate clearance.

That is why we check first: send us photos of your door and gate for a free Fit Check, and we will tell you which models fit before you buy.

Do I need a separate gate lock?

If your home has a front gate, a separate digital gate lock can improve both convenience and layered security. Many Singapore homeowners prefer a door-and-gate setup so both access points work together more smoothly.

How much does a digital lock cost in Singapore?

Digital locks in Singapore range from about $338 (Samsung SHS 1321, basic PIN and card) to $849 and above for models with 3D face and palm vein recognition, such as the Interlock Mercury X6. Most quality locks for HDB main doors fall between $499 and $899. Interlock Mercury locks include professional installation. For other brands, installation typically costs $150 to $200. Mercury door and gate bundles start from $999.

How much does it cost to install a digital lock in Singapore?

Interlock Mercury locks come with professional installation included. For other brands or install-only jobs, installation in Singapore typically costs $150 to $200. Metal doors or doors that need extra modification may cost more because of the extra work required. We confirm your installed price upfront after a free Fit Check.

Do digital locks work without Wi-Fi?

Yes, many digital locks like the offline first Interlock Mercury X2 don’t require Wi-Fi. Features like PIN codes and fingerprint access usually work without an internet connection. Wi-Fi is only necessary for remote access and smart features. Some models also use Bluetooth instead of Wi-Fi.