Best Digital Lock Brands in Singapore (2026 Edition)
Interlock Singapore
There is no single best digital lock brand for every Singapore home. The right brand depends on three things: whether you have a metal gate as well as a main door, how much you want an app involved, and who will look after the lock once it is on your door.
For most HDB homes with a door and a gate, we recommend Interlock Mercury. For a smart-home setup, Aqara. For a trusted name and a simple lock that just works, Gateman. Our quick picks are below, followed by a card for every brand, real price ranges and the warranty questions most buyers forget to ask.
Quick picks
Interlock Mercury
Matching door and gate locks that unlock together, with a key on both sides of the gate.
Door from $549 · Bundle from $999 See why it stands out →Aqara
Apple Home, Google Home and Matter support on selected models.
From $499 Aqara card →Gateman
A well-known Korean brand with proven locks and little or no app dependence.
From $388 Gateman card →Igloohome
Offline, time-limited PINs for guests, tenants and contractors.
From about $569 Igloohome card →On this page
How we picked these brands
We have installed and serviced digital locks in Singapore homes since 2008. Each brand was judged on what actually goes wrong after installation, not on spec sheets.
- Door and gate fitDoes the brand cover both the wooden main door and the metal gate most HDB flats have?
- Daily reliabilityHow the lock behaves after months of use, low batteries and humid weather.
- Access for everyoneOptions for elderly parents, children and helpers, not only fingerprints.
- After-sales pathWho you call when something breaks, and whether they come to you.
Disclosure: Interlock sells and installs most brands on this list, and Mercury is our own range. Brands we do not sell are marked, and their prices come from major Singapore retailer listings.
Why Interlock Mercury stands out
Interlock Mercury
Interlock Mercury is a range of digital door and gate locks by Interlock Singapore, designed for HDB, condo and landed homes with a main door and a metal gate. The door and gate locks work as one system, and one local team installs and supports both.
Most brands sell a door lock and leave the gate as an afterthought. Mercury is the only brand in this guide that combines a key on both sides of the gate, door and gate unlocking together, and palm vein recognition.
Mercury X6: our best door lock, even on its own
The Interlock Mercury X6 is a premium smart door lock with a built-in 4-inch door viewer, 3D face recognition, palm vein recognition and live video on your phone. You do not need a gate lock to get the most out of it.
- Built-in door viewer. A 4-inch screen inside shows who is outside, with two-way audio so you can talk before you open.
- Live view on your phone. When the doorbell rings, you can see and answer visitors from the app, even when you are out.
- 3D face and palm vein. Walk up and it opens, hands full or not. The 3D scan checks for a live face, so a photo cannot open it.
- 7 ways in. 3D face, palm vein, fingerprint, PIN, card, app and mechanical key.
6 things that make Mercury different
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2 sides
DualKey™: a gate key on both sides
The Mercury G4 gate lock has a mechanical key on both the outside and the inside of the gate. If the electronics ever fail, you can still open it by hand from either side, so you are never locked in or locked out. Most gate locks have a key on one side only.
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1 scan
Door and gate unlock together
Pair a Mercury X2, X5 or X6 door lock with a Mercury G3 or G4 gate lock, and both can unlock from a single scan.
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Palm vein
Palm vein and 3D face recognition
The X5, X6, G3 and G4 unlock by palm vein and 3D face, as well as fingerprint, PIN, card, app and key. Palm vein reads the veins under the skin, so it works for elderly parents with worn or dry fingerprints.
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2 cameras
A gate lock that sees the parcel too
The Mercury G3 gate lock has two cameras: one for the visitor's face and one pointed down at parcels left at the gate, with live video on your phone.
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App or not
Full app control, or none at all
The X5, X6, G3 and G4 work with the Tuya Smart app for remote unlocking, one-time PINs for guests and helpers, alerts and video. Prefer nothing online? The X2 needs no app and no Wi-Fi.
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1 team
Installed and supported by Interlock
Every Mercury lock comes with free installation and a 1-year onsite warranty. The team that fits your lock is the team you call, and they have been installing locks in Singapore since 2008.
Choose your Mercury
Swipe for all models. Prices include installation.
- You have a main door and a metal gate
- Someone at home struggles with fingerprints
- You want one team for fitting and repairs
- You want Apple Home or Matter control (see Aqara)
- You only need a basic PIN lock under $400
Every brand, and who it suits
One card per brand. Prices are door lock ranges unless stated. Brands marked "Not sold by Interlock" are priced from major Singapore retailer listings.
Aqara
Sold + installed by InterlockBest for smart-home ecosystems
Locks that join a wider home of sensors, lights and automations. Selected models work with Apple Home, Google Home or Matter.
- Price
- $499 to $1,059
- Gate lock
- Yes, U500 from $799
- Biometrics
- Fingerprint (all models), 3D face (D200i)
- Also opens by
- PIN, NFC card, app, Apple Home Key (varies by model)
- Models
- A100, D200i, U100
Gateman
Sold + installed by InterlockBest trusted name for a simple, reliable lock
One of the best-known Korean lock brands, for households that want a familiar name and a lock that just works.
- Price
- $388 to $749
- Gate lock
- Not in our range
- Biometrics
- Fingerprint (Grab Scan)
- Also opens by
- PIN and card
- Models
- SP122, Grab Scan
Samsung / Zigbang
Sold + installed by InterlockBest for a familiar Korean door lock
Samsung's digital lock line is now sold as Zigbang. Same designs many owners already know.
- Price
- $338 to $888
- Gate lock
- Not in our range
- Biometrics
- Fingerprint (DR900)
- Also opens by
- PIN and card
- Models
- DR900, SHS-1321
Solity
Sold + installed by InterlockBest Korean option with a matching gate lock
Fast fingerprint push-pull locks, with face recognition on selected models, plus gate locks and a door + gate bundle.
- Price
- $388 to $1,099
- Gate lock
- Yes, from $649. Bundle $979
- Biometrics
- Fingerprint (most models), face (GP-6000 Facial, G1)
- Also opens by
- PIN, card, app, key (varies by model)
- Models
- GP-6000, bundle
Kaadas
Not sold by InterlockBest for copper and champagne-gold finishes
Warm metallic finishes alongside matt black and chrome, sold at its own showroom and through retailers.
- Price
- About $650 to $840
- Gate lock
- Yes, bundles from about $1,369
- Biometrics
- Fingerprint (most models), face and finger vein (top models)
- Also opens by
- PIN, card, app, key (varies by model)
- Models
- K9-5W, K20 Pro Max, Q9
Igloohome
Not sold by InterlockBest for rentals and temporary PINs
Singapore-founded, known for offline time-limited PINs for guests and tenants.
Door closer required. Igloohome says its mortise locks must be installed with a door closer. Without one, the warranty is void.
- Price
- About $569 (Mortise 2)
- Gate lock
- Yes, bundles about $943
- Biometrics
- Fingerprint (Mortise 2+), face with Wink add-on ($199 to $349)
- Also opens by
- PIN, card, Bluetooth app
- Models
- Mortise 2, Mortise 2+, Metal Gate 2
Digital lock brands compared at a glance
Read this as a map of trade-offs. The biometric columns show which unlock methods use your body: palm vein, finger vein, face and fingerprint. Every brand here also offers PIN code access, and most add card, app or key access.
| Brand | Door lock price | Matching gate lock | Biometrics | Who you call after install | |||
|---|---|---|---|---|---|---|---|
| Palm vein | Finger vein | Face | Fingerprint | ||||
| Interlock Mercury | $549 to $849 | Yes | Selected models | No | Selected models | All models | Interlock, 1-yr onsite |
| Aqara | $499 to $1,059 | Yes | No | No | Selected models | All models | Interlock |
| Gateman | $388 to $749 | No | No | No | No | Selected models | Interlock |
| Samsung / Zigbang | $338 to $888 | No | No | No | No | Selected models | Interlock |
| Solity | $388 to $1,099 | Yes | No | No | Selected models | Most models | Interlock |
| Kaadas | About $650 to $840 | Yes | No | Selected models | Selected models | Most models | Your retailer, varies |
| Igloohome | About $569 | Yes | No | No | Add-on | Selected models | Your retailer, varies |
"Selected models" means some, not all, of that brand's locks. Mercury palm vein and face: X5, X6, G3 and G4. The X2 uses fingerprint, PIN, card and key.
How much does a digital lock cost in Singapore?
Expect to pay $300 to $1,100 for a door lock, and around $1,000 to $1,400 for a matching door and gate set. Here is what each price band usually gets you.
PIN, card and fingerprint. Usually no app. Good for a simple main door.
App control, temporary PINs, better fingerprint readers. Mercury X2 and X5 sit here.
3D face, palm vein, built-in viewer or camera, premium finishes.
Mercury from $999, Solity $979, Aqara $1,249. Matching sets avoid two apps and two support lines.
Costs that are easy to miss: installation (included with Mercury, extra at some retailers), a door closer if your door needs one ($168, and required by Igloohome to keep its warranty valid), and replacement batteries.
Warranty and support: the part buyers underrate
A digital lock is a motor and a circuit board on a door you use 10 times a day. Sooner or later something will need attention. Before you buy any brand, ask:
- Who installs it? Poor alignment strains the motor and causes most early faults.
- Is the warranty onsite or carry-in? Removing a lock to send it away leaves your door unsecured.
- Is the unit a local set? Grey imports may not carry a local warranty.
- Who do I call in a year? The best answer is the same team that fitted it.
- What happens if the electronics fail? Check there is a mechanical key, and for gates, which side it is on.
Which digital lock brand is best for an HDB flat?
For most HDB flats, pick a brand that covers both the gate and the main door, so both locks share one app, one installer and one support line. Mercury, Solity and Aqara all offer matching sets.
Put the smart features on the gate
The gate faces the corridor, so that is where a camera, face unlock and visitor alerts are most useful. The G3 shows both the visitor and any parcel at their feet.
Keep the gate recoverable
Gate locks live outdoors and work hard. A key on both sides, like the G4 DualKey™, means a failed lock never traps you on the wrong side.
Match the door to the people
Elderly parents with worn fingerprints do better with palm vein or face. A busy young family may prefer the offline X2.
More detail in our best HDB digital gate lock guide.
Common mistakes when choosing a brand
- Ignoring the gate. Comparing door locks only can leave you with two brands, two apps and two support numbers.
- Assuming every model is the same. Features vary a lot within one brand. Compare the exact model.
- Buying on price alone. A cheap lock that needs repeated callouts costs more in the end.
- Forgetting who will use it. Children and elderly users may need face, palm, card or PIN instead of fingerprint.
- Trusting a strong Wi-Fi signal. Smart locks need a 2.4GHz network. Some combined and Wi-Fi 7 setups will not pair.
Frequently asked questions
What is the best digital lock brand in Singapore?
For HDB homes with a main door and a metal gate, Interlock Mercury is our top pick. Its door and gate locks unlock together, the Mercury G4 gate lock has a mechanical key on both sides (DualKey™), the X5, X6, G3 and G4 offer palm vein and 3D face recognition, and one local team installs and supports both locks. For Apple Home or Matter control, choose Aqara. For a trusted name and a simple lock, choose Gateman.
What makes Interlock Mercury different from other digital lock brands?
Interlock Mercury combines four things rarely found together in Singapore: a gate lock with a mechanical key on both sides (DualKey™ on the G4), door and gate locks that unlock together, palm vein and 3D face recognition, and free installation with a 1-year onsite warranty from Interlock, who have installed locks in Singapore since 2008. The G3 gate lock also has two cameras, one for faces and one for parcels.
What is the best Interlock Mercury door lock?
The Mercury X6 is our flagship door lock. It has a built-in 4-inch door viewer with two-way audio, live video on your phone through the app, 3D face recognition and palm vein recognition, and seven ways to unlock in total. It works fully on its own, with no gate lock needed.
Does Interlock Mercury need an app?
No, it is your choice. The Mercury X5, X6, G3 and G4 work with the Tuya Smart app for remote unlocking, one-time PINs, alerts and video. The Mercury X2 works fully offline with no app or Wi-Fi.
Which digital lock brand has palm vein recognition?
Among the brands in this guide, only Interlock Mercury offers palm vein recognition in Singapore, on the X5 and X6 door locks and the G3 and G4 gate locks. Palm vein works for people whose fingerprints are worn or dry.
Which digital lock brand is best for an HDB flat?
A brand that offers matching door and gate locks. Mercury, Solity and Aqara all do. Put the camera and face unlock on the gate, since it faces the corridor.
How much does a digital lock cost in Singapore?
Most door locks cost $300 to $1,100. Matching door and gate sets cost about $1,000 to $1,400. Check whether installation is included.
Can I buy a Mercury door lock without a Mercury gate lock?
Yes. The X2, X5 and X6 are complete standalone door locks. A Mercury gate lock is only needed if you want a smart gate or synchronised door and gate unlocking.
Which brand is best for Apple Home or Google Home?
Aqara. Selected models support Apple Home, Google Home or Matter, depending on the model and hub. Check the exact model before buying.
Is Samsung still a digital lock brand in Singapore?
Samsung's digital door locks are now sold under the Zigbang name. Models such as the DR900 and SHS-1321 continue under the new brand.
What happens if my digital gate lock stops working?
Most gate locks have a mechanical key on one side only, so a failed lock can leave you locked in or out. The Mercury G4 DualKey™ has a key on both sides of the gate.
Where should I buy a digital lock in Singapore?
Buy from a seller that installs and supports the lock locally. Marketplace listings can be cheaper, but installation and warranty vary by seller.
Final verdict
- HDB door + gate: Interlock Mercury
- Smart-home ecosystem: Aqara
- Trusted name, simple and reliable: Gateman
- Familiar Korean lock: Samsung / Zigbang or Solity
- Copper or gold finish: Kaadas
- Rentals and guests: Igloohome
Choose by your door, your gate and the people who use them, then by brand. If you are unsure, send us a photo of your door and gate and we will tell you what fits.