Best Digital Lock Brands in Singapore (2026 Edition)

Best Overall for HDB Door + Gate: Interlock Mercury

Interlock Mercury ranks as the best overall digital lock brand for many HDB households because it is built around Singapore’s common two-layer entrance: a wooden main door paired with a metal gate.

Many digital lock brands are evaluated mainly as individual door locks. Mercury adds another layer by treating the door and gate as one daily entry system. Compatible Mercury locks can be paired for synchronised unlocking, while Interlock handles the recommendation, installation, alignment, calibration, pairing, and after-sales support through one local support path.

This synchronised HDB setup remains Mercury’s strongest brand-level advantage. However, Mercury is not only useful when purchased as a bundle. Selected Mercury door and gate locks also stand out individually for homeowners with different priorities.

Why Interlock Mercury Leads for HDB Homes

• Designed around door + metal gate setups: Useful for HDB flats where both layers are part of the daily entry experience.
• Synchronised unlocking options: Compatible Mercury door and gate locks can be paired for smoother entry and exit.
• Strong standalone lock choices: The X6, X2, and G4 serve different premium, privacy, and security needs even when purchased individually.
• Installer-led accountability: One team handles compatibility checks, installation, alignment, pairing, and post-sales support.
• Family-friendly access: Selected models support face recognition, palm vein, fingerprint, PIN, RFID, app access, mechanical keys, and emergency power.
• Suitable for multi-generation households: Face recognition, palm vein, cards, and PINs give alternatives when fingerprint recognition is inconsistent.

Shop Interlock Mercury Series | Browse Mercury Smart Locks | Ask for a Door & Gate Compatibility Check

Best for Smart Home Ecosystems: Aqara

Aqara is the strongest choice for homeowners who want their digital lock to become part of a wider smart-home ecosystem involving sensors, hubs, lighting, curtains, cameras, and automations.

Selected Aqara models can support integrations involving Apple Home, Google Home, or Matter depending on the exact lock, required hub, and setup. This makes Aqara especially suitable for tech-forward homeowners who already use compatible devices and are comfortable managing a connected ecosystem.

The main consideration is that smart-home compatibility should be checked at model level. Aqara is also not always the most straightforward choice for every metal gate, existing door cut-out, or older HDB entrance.

Best Value-for-Money Reliable Brand: Gateman

Gateman is our best value-for-money recommendation for homeowners who prioritise reliability, straightforward operation, and lower dependence on apps or cloud services.

Representative models include the Gateman SP122, a simple PIN-and-card lock with no app dependency, and the Gateman Grab Scan, which adds handle-integrated fingerprint access.

Gateman is best for households that want a proven digital lock experience without paying for advanced cameras, facial recognition, palm vein access, or extensive smart-home features they may not use.

Best for Familiar Korean Door Locks: Samsung / Zigbang

Samsung / Zigbang remains a familiar choice for homeowners who prefer established Korean digital lock designs and straightforward auto-locking.

The Zigbang DR900 is the more complete mortise option, supporting fingerprint, card, PIN, and mechanical key access. The Zigbang SHS-1321 is a simpler add-on rim lock for homeowners who want to retain their existing door handle and add PIN-and-card access with less modification.

Zigbang is best for homeowners who already know they want a familiar Korean main door lock. It is less focused on a complete synchronised HDB door-and-gate ecosystem.

Best for Premium Aesthetics: Kaadas

Kaadas is most relevant to homeowners who treat the entrance as part of their interior design and prefer a sleek, premium-looking digital lock.

The brand is often considered for modern condo doors and renovated homes where the finish, profile, and visual integration of the lock matter as much as the access functions.

Kaadas is kept at brand level in this guide because specifications and strengths differ across its models. Homeowners should compare the exact model rather than assuming every Kaadas lock offers the same biometric, app, or installation capabilities.

Practical Korean Smart-Lock Alternative: Solity

Solity remains a practical Korean smart-lock alternative for homeowners who like Korean push-pull designs and want access features such as fingerprint, PIN, card, facial recognition, app functions, alarms, or logs depending on model.

Representative examples include the Solity GP-6000 facial-recognition door lock and the Solity GEA1000K + G1 door-and-gate bundle.

Solity is worth considering for homeowners who specifically prefer its Korean design and feature mix. However, it is positioned here as an alternative rather than the strongest overall recommendation for Singapore HDB synchronisation, privacy-focused offline use, or security redundancy.

Best for Rental Units and Temporary PIN Sharing: Igloohome

Igloohome is mainly relevant for landlords, rental units, guest stays, and situations where owners need to issue temporary access without handing over physical keys.

Its offline time-bound PIN approach can simplify guest check-ins, contractor access, tenant turnover, and property management. For owner-occupied HDB or condo homes, however, it is less focused on advanced family biometrics, gate synchronisation, or a full door-and-gate experience.

Mercury X6 Premium — Best Premium All-in-One Door Lock

The Interlock Mercury X6 is the flagship Mercury door lock for homeowners who want advanced access, visitor viewing, and a premium physical design in one lock.

Its access methods include palm vein recognition, advanced 3D facial recognition, fingerprint, PIN, RFID card, app access, and mechanical key backup. It also supports custom temporary PINs and one-time access codes, making it useful for family members, trusted visitors, helpers, or service access.

The X6 also includes video monitoring, recording support, motion detection, and a built-in indoor display. Its premium aluminium construction and curved profile are designed to create a natural grip-and-push movement when opening the door.

Choose the Mercury X6 if: you want the most complete Mercury door lock with advanced biometrics, smart access management, visitor viewing, and a premium build.

Main consideration: The X6 may be more advanced than necessary for households that only need reliable fingerprint, PIN, and card access. Connected functions also depend on suitable Wi-Fi and normal rechargeable-battery maintenance.

Mercury X2 Privacy — Best Privacy-Focused Offline Door Lock

The Interlock Mercury X2 is designed for homeowners who want digital convenience without connecting their main door lock to an app, Wi-Fi network, or cloud account.

The X2 supports fingerprint, PIN, RFID card, and mechanical key access. User information is managed locally on the lock, while four standard AA batteries provide straightforward power without requiring a rechargeable lithium battery pack.

This makes the X2 a strong choice for privacy-conscious users, less technical households, rental units, elderly family members, or anyone who prefers a simpler digital lock with fewer connected features to manage.

Choose the Mercury X2 if: you want a straightforward offline lock with local access management, standard AA batteries, and no dependence on Wi-Fi or cloud services.

Main consideration: The X2 is intentionally simpler and does not provide the facial recognition, palm vein, app control, remote viewing, or video functions found on more advanced Mercury models.

Mercury G4 Security — Best Security-Focused Digital Gate Lock

The Interlock Mercury G4 is designed for homeowners who want advanced biometrics together with stronger emergency access redundancy.

Its defining feature is Interlock DualKey™, which provides mechanical key access from both the outside and inside of the gate. Many digital gate locks only provide an internal mechanical key, which may not help a homeowner locked outside if the battery is depleted and emergency power cannot be used. DualKey™ gives the G4 a physical backup method from either side.

The G4 also supports facial recognition, palm vein recognition, fingerprint, PIN, NFC card or tag, app remote access, a remote controller, video intercom, motion alerts, and a built-in camera for basic doorway viewing.

The built-in camera is useful for checking who is at the entrance, but it should not be treated as a replacement for continuous CCTV surveillance. Video availability and recording depend on the lock’s app, connection, storage settings, and the event being captured.

Choose the Mercury G4 if: you want a premium gate lock that prioritises security redundancy, multiple biometric options, and a dependable mechanical fallback from both sides.

Main consideration: App, remote access, and video functions require a suitable 2.4GHz Wi-Fi environment. Final suitability still depends on the gate design, lock area, gate gap, and door-to-gate clearance.

Mercury Door + Gate Bundles — Best for Synchronised HDB Entry

Homeowners who want the full Mercury advantage can pair selected X6 or X5 door locks with G3 or G4 gate locks through the Mercury door-and-gate bundle.

• X6 or X5 + G4: Best for homeowners who want premium biometrics, synchronised access, and stronger lockout assurance through the G4 DualKey™ system.
• X6 or X5 + G3: Best for households that prioritise synchronised access together with Wi-Fi video functions, dual-camera monitoring, parcel awareness, and app connectivity.

The purpose of the bundle is not merely to place two locks from the same brand at the entrance. It is to create one coordinated entry experience, with compatible locks paired for smoother unlocking and one local team accountable for the recommendation, installation, alignment, pairing, and after-sales support.

1. Interlock — Mercury Series

Interlock Mercury is popular because it addresses a key reality of many Singapore homes: the entrance includes both a wooden main door and a metal gate.

Compatible Mercury locks can be paired through Interlock’s synchronised unlocking setup, helping homeowners avoid managing unrelated door and gate brands, different user experiences, and separate support channels.

Mercury also offers clearer individual product choices. The X6 is the premium all-in-one door lock, the X2 is the privacy-focused offline door lock, and the G4 is the security-focused digital gate lock. Homeowners who want the full ecosystem can pair X6 or X5 door locks with G3 or G4 gate locks.

Choose Interlock Mercury if: you want a locally supported digital lock range with strong standalone options and a complete synchronised HDB door-and-gate solution.

2. Aqara

Aqara is also well-liked because they are the strongest choice for homeowners who want a connected smart home rather than only a standalone digital lock.

Depending on the exact model and hub, Aqara locks can work with a wider ecosystem of sensors, automations, lighting, curtains, and smart-home platforms. This makes the brand particularly suitable for tech-forward homeowners who already use Aqara or compatible devices.

The main limitation is that compatibility must be checked at model level, and Aqara may not always be the most straightforward choice for every HDB metal gate or replacement installation.

Choose Aqara if: smart-home integration and automation are your top priorities.

3. Gateman

Gateman comes in strong because it provides strong real-world value for homeowners who prefer reliability and simpler operation over an extensive smart-feature list.

The Gateman SP122 is suitable for users who want PIN-and-card access without an app, while the Gateman Grab Scan adds fingerprint convenience through a handle-integrated scanner.

Gateman is not the best choice for users seeking facial recognition, palm vein access, remote video viewing, or a deeply connected smart-home ecosystem. Its value lies in straightforward daily use and proven lock design.

Choose Gateman if: you want a reliable and practical Korean digital lock with lower software dependency.

4. Samsung / Zigbang

Samsung / Zigbang remains one of the most recognisable names in Singapore’s digital lock market, particularly among homeowners who have used older Samsung locks or prefer Korean door-lock designs.

The Zigbang DR900 provides fingerprint, card, PIN, and mechanical key access in a mortise lock. The Zigbang SHS-1321 is a simpler add-on rim lock that allows homeowners to retain their existing door handle while adding PIN-and-card access.

Zigbang is less focused on advanced smart-home integration or a complete HDB door-and-gate ecosystem. It is best for homeowners who want familiar, straightforward main door operation.

Choose Samsung / Zigbang if: you prefer a familiar Korean brand and already know whether you want a mortise or add-on rim lock.

5. Solity

Solity remains a recognised Korean digital lock brand with a mix of door, gate, facial-recognition, and bundle options.

The Solity GP-6000 is a representative facial-recognition door lock, while the Solity GEA1000K + G1 bundle gives homeowners a matching Korean door-and-gate setup.

Solity is still worth considering, but it is positioned as an alternative rather than the strongest recommendation for synchronised HDB access, offline privacy, or security-first gate lock redundancy.

Choose Solity if: you specifically prefer its Korean design and model range.

6. Kaadas

Kaadas is relevant to design-conscious homeowners who want a premium-looking digital lock for a modern main door or condo entrance.

Its strength is appearance-led positioning, including sleek profiles and refined finishes across selected ranges. However, model features and compatibility vary, so the exact lock should be assessed rather than choosing based on brand appearance alone.

Choose Kaadas if: premium entrance aesthetics are more important than a complete locally managed door-and-gate ecosystem.

7. Igloohome

Igloohome is a specialised recommendation for rental access, guest access, and temporary PIN sharing.

It can be useful for landlords, hosts, service apartments, and property managers who need to issue time-bound access without arranging physical key handovers.

For owner-occupied HDB or condo units, Igloohome may not be the first recommendation unless temporary access management is the household’s main requirement.

Choose Igloohome if: you manage rentals, guests, or frequent temporary access.