Note: Product visuals are presented for illustrative purposes only and may vary slightly in colour, finish, proportions, and final installed appearance. For the most realistic representation, please refer to our Customer Gallery featuring actual installation photos.
Please check the following requirements before purchase. If unsure, send us your door and gate photos on WhatsApp and our team will confirm compatibility before installation.
Gate Gap
Gap Requirement: 4-8mm
Gate Thickness
Recommended Gate thickness: 25-40mm
Distance Between Door & Gate
Minimum Distance Required: >40mm
Real installation photos from our customers.
Frequently Asked Questions
Have questions? We're here to help you.
The Interlock Mercury G3 is best suited for homeowners who want a smart gate lock with stronger gate visibility, visitor awareness, parcel monitoring, and remote app access. It is designed for Singapore metal gate setups, including common HDB, condominium, and landed property gates.
The Mercury G3 is Singapore’s first dual-camera smart gate lock, with one upper camera for visitor viewing and one lower camera for parcel or floor-level monitoring. This gives homeowners better gate awareness beyond basic unlocking.
The upper camera helps you view visitors at face level, while the lower camera helps you monitor parcels, items, or movement near the floor area. This is useful because many gate activities happen at different heights, especially for deliveries.
Yes. The Mercury G3 supports app-based live viewing, allowing you to check visitors remotely through your smartphone when the lock is connected to the internet.
Yes. The lower camera is designed to improve parcel and floor-level awareness near your gate. This can help homeowners notice deliveries, items left outside, or movement that may not be captured clearly by a normal face-level camera.
The Mercury G3 can reduce the need for a separate gate-area camera for many homeowners, but it is not a full CCTV system. It is best understood as a smart gate lock with built-in visitor and parcel viewing, rather than a complete home surveillance setup.
Yes. The Mercury G3 supports facial recognition unlocking, allowing users to unlock the gate hands-free without relying only on fingerprint, PIN code, card, or app access.
Yes. The Mercury G3 supports palm vein recognition as one of its biometric access methods. This is useful for users who prefer a contactless unlocking method or who may not always get consistent fingerprint recognition.
From the outside, the Mercury G3 supports fingerprint, passcode, NFC card or tag, facial recognition, palm vein recognition, and remote unlock through app or WiFi.
From the inside, the Mercury G3 supports fingerprint unlocking, mechanical key access, and remote keyfob controller unlocking.
Yes. The Mercury G3 supports WiFi app remote unlocking, allowing you to unlock and manage access through the mobile app when the lock is connected to the internet.
Yes. When connected to WiFi, the Mercury G3 can support remote unlocking through the app. This can be useful for trusted family members, helpers, or visitors, but you should only unlock remotely after confirming who is at the gate.
Yes. The Mercury G3 supports mobile alerts for gate activity, visitors, motion detection, and selected motion events depending on the app configuration.
Yes. The Mercury G3 supports activity logging, allowing you to review access records and selected monitoring history. This can help you keep track of gate usage and visitor or delivery events.
Yes. The Mercury G3 includes tamper detection features that help alert homeowners to forced-entry attempts or unusual activity around the gate lock.
Basic lock functions do not require a paid cloud video subscription. The Mercury G3 includes a complimentary cloud storage trial for video recordings, and continued cloud video storage may require an optional subscription after the trial. Photo cloud storage and local storage may still be available depending on the supported setup.
The Mercury G3 includes a complimentary trial for cloud video recording. After the trial, cloud video storage may require a subscription, but supported local storage options may allow videos or photos to be saved without a paid cloud plan.
Yes. The Mercury G3 supports cloud image storage for recent snapshots at no extra charge, depending on the app setup. Stored images may be kept on a rolling basis and automatically deleted after the supported storage period.
The Mercury G3 provides low-battery alerts and an emergency power port. If the battery is fully depleted, you can temporarily power the lock using a portable power bank to regain access.
Yes. If the lock battery is depleted, you can use the emergency power port with a portable power bank for temporary activation. This is meant for emergency access, after which the lock should be recharged or maintained according to the recommended instructions.
Yes. WiFi is mainly needed for remote app features. If WiFi is down, you can still use non-app access methods such as facial recognition, palm vein recognition, fingerprint, PIN code, NFC card or tag, remote controller, or mechanical key access where applicable.
Yes. The Mercury G3 is designed for common Singapore metal gate setups, including HDB gates. However, compatibility still depends on the actual gate design, lock area, gate gap, and installation clearance.
Yes. The Mercury G3 can be suitable for condominium and landed property metal gates, depending on the gate structure and available installation space. A compatibility check is recommended before purchase.
Not every metal gate is suitable. Some gates may have limited lock space, narrow gate-to-door clearance, unusual frame designs, or installation restrictions. A photo-based compatibility check is recommended before confirming installation.
You should send clear photos of the front and back of the gate, the current lock area, the gate frame, and a photo showing the door and gate closed together. If possible, also provide the gate-to-door distance so our team can check installation clearance.
Yes. The Mercury G3 can be suitable for elderly users because it offers multiple access methods, including facial recognition, palm vein recognition, fingerprint, card or tag, PIN code, app unlock, remote controller, and mechanical key access. This gives the household more flexibility if one method is less convenient.
Yes. Children can use suitable access methods such as card or tag, PIN code, fingerprint, or palm vein recognition depending on their height, habits, and family preference. For younger children, parents may prefer simpler access methods such as tags or PIN codes.
Yes. The Mercury G3 includes mechanical keys for emergency or backup access.
Yes. The Mercury G3 includes tags that can be used as a convenient access method for household members.
Yes. The Mercury G3 includes a remote control, which can be used as one of the unlocking methods from inside the home.
The Mercury G3 is designed for Singapore gate environments, but it should still be protected from direct heavy rain exposure where possible. For unsheltered or highly exposed gates, it is best to check suitability with our team before purchase.
The Mercury G3 comes with 1 year local warranty. Warranty coverage may depend on usage conditions, installation conditions, and whether the lock is used within recommended environments.
Yes. Complimentary installation is included for the Mercury G3. Before installation is confirmed, our team will still need to check your gate photos to make sure your gate design, lock area, gate gap, and door-to-gate clearance are suitable.
The Mercury G3 is suitable for homeowners who want a smart gate lock with advanced access methods, dual-camera visitor and parcel awareness, app monitoring, mobile alerts, and professional installation support. It is especially useful for homes where deliveries, visitors, and gate-area monitoring are important.