Instant Simultaneous Dual Unlock for Gate & Door Locks in Singapore
Interlock Singapore
Smart home technology has evolved rapidly over the past few years. Yet some homeowners still experience noticeable delays between their digital gate lock and door lock.
When a synchronised system works properly, you should not feel as though you are unlocking two completely separate devices.
The gate and door locks should communicate smoothly, respond closely together and create one coordinated entry experience.
The Truth About Advanced Dual Synchronised Smart Lock Systems in Singapore
Some digital lock systems market fast synchronisation as an exclusive or premium breakthrough.
However, the more important question is not simply whether a lock supports synchronisation.
Homeowners should also ask:
- How quickly do the paired locks respond?
- Has the system been repeatedly tested?
- Does it require Wi-Fi to synchronise?
- What happens when one lock is offline?
- What can cause the synchronisation to stop working?
- Is local support available if the connection develops an issue?
A properly designed smart lock ecosystem should provide fast and consistent communication between compatible door and gate locks under suitable installation conditions.
That is what the Interlock Mercury Door and Gate Lock Bundle is designed to deliver.
What Is a Dual Synchronised Smart Lock System?
A dual synchronised smart lock system allows a compatible:
To communicate and unlock together using one successful authentication.
Instead of unlocking the gate and then repeating the same fingerprint, facial recognition, palm vein, PIN or card authentication at the door, the first lock sends an instruction to the paired lock.
The sequence works like this:
- The user successfully authenticates at the first lock.
- The first lock begins unlocking.
- The synchronisation module sends a local signal.
- The paired lock receives the signal.
- The second lock begins unlocking without another authentication.
This creates a smoother smart home entry experience:
- One authentication for two locks
- Less waiting between the gate and door
- No need to repeat the same unlocking action
- More convenient entry while carrying bags or groceries
- A more connected door-and-gate lock system
The two lock motors may not begin moving at the exact same millisecond. A short communication process still takes place between them.
However, when the response gap is sufficiently short, both locks feel as though they are unlocking as one coordinated system.
Introducing the Interlock Mercury Door and Gate Lock Bundle
Advanced Dual Synchronised Module™
The Interlock Mercury Bundle combines:
- A compatible Mercury digital door lock
- A compatible Mercury digital gate lock
- The Interlock Advanced Dual Synchronised Module™
The module is designed to create local communication between both locks so that one successful authentication can initiate a coordinated dual unlock.
Compatible combinations include:
- Mercury X6 with G3 or G4
- Mercury X5 with G3 or G4
- Mercury X2 with G3 or G4
The system is designed around:
- Fast local communication
- One authentication for two locks
- Short response time between the paired locks
- Operation without relying on home Wi-Fi
- A smoother daily entry experience
Tested and Trialled Hundreds of Times
We tested and trialled the Interlock Mercury synchronisation system hundreds of times across the X6, X5 and X2 door locks paired with the G3 and G4 gate locks.
During these internal practical tests:
- Both the door and gate lock batteries were maintained above 50%
- Door-to-gate distances ranged from approximately 10cm to 50cm
- The paired locks completed the synchronised unlocking process successfully throughout the trials
- No failed synchronisation attempt was recorded under the stated test conditions
- The observed average synchronisation response was below one second
How to understand these results:
The results apply to the tested Mercury combinations, battery conditions and door-to-gate distances described above.
They should not be interpreted as a lifetime guarantee or as a guarantee that every installation will produce exactly the same result. Battery condition, installation distance, lock alignment, module condition and surrounding obstructions can affect actual performance.
Observed Below-One-Second Response
During our internal trials, the observed average response between the paired locks was below one second.
This does not mean that both lock motors begin moving at the exact same millisecond.
The first lock must still:
- Recognise the authorised user
- Approve the authentication
- Begin unlocking
- Send the local synchronisation instruction
- Trigger the paired lock
However, the communication interval was short enough during testing for the door and gate locks to feel like one coordinated unlocking process.
Instead of presenting “sub-one-second” as an unconditional promise, it should be understood as an observed average under the stated test conditions.
True Coordinated Unlock vs Delayed Sequential Unlock
Delayed Sequential Unlock
Some systems may operate through a longer sequential process:
- The first lock unlocks
- The system attempts communication
- The paired lock wakes from standby
- The second lock receives the command
- The second lock activates later
This can create:
- A noticeable delay between the locks
- An inconsistent entry experience
- A need to pause before opening the door
- The impression that the second lock did not receive the instruction
Coordinated Unlock with the Interlock Mercury Bundle
The Interlock Mercury Advanced Dual Synchronised Module™ is designed to reduce the noticeable waiting period between the paired locks.
During our internal trials:
- Both locks responded closely together
- The paired lock did not require a second authentication
- The system continued operating without home Wi-Fi
- The observed average response was below one second
The result was a smoother and more connected entry experience.
How the Mercury Synchronisation Works Without Wi-Fi
The Mercury door-and-gate synchronisation should not be confused with the locks’ mobile app or Wi-Fi functions.
They are separate communication systems.
- Wi-Fi connectivity allows supported locks to communicate with an app, router or online service.
- Local synchronisation allows the paired Mercury door and gate locks to communicate directly with each other.
This means the synchronisation can continue working even if:
- The home Wi-Fi is unavailable
- The router is switched off
- The lock temporarily appears offline in the app
- The internet connection is interrupted
Both locks must still have sufficient battery power, remain correctly paired and have functioning synchronisation modules.
What Happens If One Lock Is Offline in the App?
If a lock is offline only from Wi-Fi or the mobile app, the local door-and-gate synchronisation can still work.
The user may temporarily lose access to functions such as:
- Remote unlocking
- App notifications
- Live viewing on supported camera models
- Remote activity records
However, local fingerprint, facial recognition, palm vein, PIN and card access can continue working, together with local synchronisation between compatible locks.
The Mercury X2 is an offline door lock without Wi-Fi functionality, but it can still synchronise locally with compatible Mercury gate locks.
What Happens If One Lock Has a Flat Battery?
A completely unpowered lock cannot receive or complete a synchronisation instruction.
The lock that still has power may unlock normally, but the lock with the flat battery will remain locked.
The affected lock will need to be accessed using the emergency method supported by that model, such as:
- A USB emergency-power port
- A compatible external power method
- A mechanical emergency key
Wi-Fi is not required for local synchronisation, but battery power is.
Wired & Wireless Synchronisation Explained
Digital lock synchronisation can be implemented through different communication methods.
Wired Synchronisation
A wired system uses a physical cable between the devices.
This can provide a direct communication path, but it is often impractical between a moving metal gate and a separate main door because the wiring must safely cross the space between them.
Wireless Synchronisation
Wireless synchronisation is a broad category covering any communication method that does not require a physical cable.
Wireless systems may use:
- Radio frequency
- Bluetooth
- Wi-Fi
- Another short-range wireless protocol
Stable Synchronisation During Daily Use
Battery-powered digital locks commonly enter a low-power standby state when they are not being used.
This helps preserve battery life but also means the lock must wake, process the instruction and activate its motor when an unlock command is received.
The Mercury Advanced Dual Synchronised Module™ is designed to provide:
- Fast local signal transmission
- A short wake-and-response process
- Stable pairing between compatible locks
- Coordinated unlocking after one authentication
Our internal trials included repeated practical unlocking across the different Mercury door-and-gate combinations.
Nevertheless, actual long-term performance still depends on the physical condition of the locks and installation.
What Can Cause Synchronisation to Stop Working?
The Mercury system performed successfully throughout our stated internal trials, but a synchronisation issue may still develop later due to battery, pairing, mechanical or hardware conditions.
1. Low Battery Power
A lock may still light up or recognise a fingerprint while lacking sufficient stable power for the motor and synchronisation module.
Both the door and gate lock batteries should be checked.
2. Synchronisation Pairing Has Been Removed
If the synchronisation setting has been removed, reset or changed, both locks may continue working individually but no longer trigger each other.
The door and gate locks will need to be paired again.
3. Repeated Door or Gate Slamming
Digital locks are exposed to movement each time the door or gate closes.
Over an extended period, repeated forceful closing or slamming may create additional vibration and impact inside the lock body.
In rare cases, this may cause a synchronisation module or one of its internal connections to become loose.
This does not commonly occur during normal use, but it is possible after long-term repeated impact.
4. Door or Gate Misalignment
A mechanical issue can sometimes appear to be a synchronisation problem.
The second lock may receive the instruction but fail to complete the unlocking movement because:
- The door or gate is pressing against the bolt
- The strike opening is misaligned
- The gate has shifted or bounced from its correct position
- The motor is operating against excessive resistance
If the paired lock makes a sound or begins moving, the issue may be mechanical rather than related to RF communication.
5. Synchronisation Module or Internal Hardware Issue
If both locks have sufficient power and remain functional individually, but re-pairing does not restore synchronisation, the internal module or its connection may require assessment.
The component may need to be inspected, reseated or replaced depending on the findings.
How to Troubleshoot Mercury Door-and-Gate Synchronisation
Step 1: Check Both Battery Levels
Check the battery condition of both the door lock and gate lock.
If either battery is low:
- Fully charge the approved rechargeable battery pack, or
- Replace the complete battery set if the lock uses disposable batteries
Test the synchronisation again after both locks have sufficient power.
Step 2: Remove and Add the Synchronisation Again
Enter the lock settings and remove the existing synchronisation connection.
Pair the compatible door and gate locks again using the correct setup procedure.
After pairing, conduct several unlock attempts instead of relying on a single successful test.
Step 3: Contact Interlock for Further Assessment
If checking the batteries and pairing the locks again does not restore the synchronisation, approach Interlock for further assessment.
Our team may need to inspect:
- The battery condition
- The synchronisation settings
- The internal module connection
- The synchronisation module
- The lock hardware
- The door and gate alignment
- Check and charge both lock batteries.
- Remove the existing synchronisation and pair the locks again.
- Contact Interlock if the problem continues.
Why More Singapore Homeowners Are Choosing Synchronised Lock Bundles
Digital lock bundles are increasingly popular among:
- HDB homeowners
- BTO owners
- New homeowners
- Renovation projects
- Families upgrading from separate locks
Homeowners are no longer looking only for two individual digital locks.
They increasingly want:
- One authentication for the door and gate
- A smoother keyless entry process
- Compatible products designed to work together
- Local synchronisation that does not depend on Wi-Fi
- Professional installation and after-sales support
A disconnected door-and-gate experience does not feel fully integrated, even when both products individually have advanced features.
Fast Dual Unlock Should Be Supported by Evidence
Words such as “instant”, “simultaneous”, “stable” and “reliable” can easily be used in product marketing.
However, homeowners should look for supporting information such as:
- The lock models tested
- Whether several combinations were evaluated
- Whether testing was repeated
- The battery condition during testing
- The tested door-to-gate distance
- The observed response time
- The limitations of the test
For the Interlock Mercury system, we tested and trialled hundreds of synchronised unlocks across the X6, X5 and X2 door locks together with the G3 and G4 gate locks.
Under the stated test conditions:
- The batteries remained above 50%
- The door-to-gate distance ranged from 10cm to 50cm
- No failed synchronisation was recorded during the trials
- The observed average response was below one second
Why Homeowners Choose the Interlock Mercury Bundle
Advanced Dual Synchronised Module™
Designed for local communication between compatible Mercury door and gate locks.
Tested Across Multiple Mercury Combinations
Trialled across the Mercury X6, X5 and X2 door locks paired with both the G3 and G4 gate locks.
One Authentication for Two Locks
The user does not need to repeat the same fingerprint, facial recognition, palm vein, PIN or card authentication at both locks.
Observed Average Response Below One Second
The paired locks responded with an observed average below one second under the stated internal test conditions.
Works Without Home Wi-Fi
Local door-and-gate synchronisation can continue even when the lock is temporarily offline from the app or home router.
Integrated Smart Entry Ecosystem
The compatible locks are configured to work together as one entry system rather than as two unrelated products.
Local Installation and Support
Interlock can assess the entrance, product compatibility and door-to-gate distance before installation.
If the synchronisation later develops an issue, our team can assess the batteries, pairing, alignment, internal connection and synchronisation module.
The Future of Smart Home Entry in Singapore
The future of digital locks is not only about adding more recognition methods, cameras or app functions.
It is also about making the complete entry process feel connected.
A modern door-and-gate lock system should focus on:
- Responsiveness
- Compatibility
- Practical reliability
- Smoother daily entry
- Local support when something goes wrong
The Interlock Mercury Bundle is built around this philosophy.
One authentication.
Two compatible locks.
One coordinated smart entry experience.
Frequently Asked Questions
Does Mercury door-and-gate synchronisation require Wi-Fi?
No. The local synchronisation can work without home Wi-Fi. Wi-Fi is used for supported app features and is separate from the local RF synchronisation between the locks.
Can the Mercury X2 synchronise even though it is an offline lock?
Yes. The Mercury X2 does not have Wi-Fi connectivity, but it can still synchronise locally with compatible Mercury gate locks through the dedicated synchronisation module.
Which Mercury lock combinations were tested?
The Mercury X6, X5 and X2 door locks were tested with the Mercury G3 and G4 gate locks.
How extensively was the system tested?
The compatible Mercury combinations were tested and trialled hundreds of times under practical internal test conditions.
Were there any synchronisation failures during testing?
No failed synchronisation was recorded during the stated internal trials.
This applies only to the tested conditions and should not be interpreted as a lifetime guarantee for every installation.
How quickly did the locks respond?
The observed average synchronisation response was below one second under the stated internal test conditions.
What battery levels were used during testing?
Both the door and gate lock batteries were maintained above 50%.
What door-to-gate distances were tested?
The tested distances ranged from approximately 10cm to 50cm.
Will synchronisation work when the lock is offline from Wi-Fi?
Yes, provided both locks still have power, remain correctly paired and have functioning synchronisation modules.
Will synchronisation work if one lock has a flat battery?
No. A completely unpowered lock cannot receive and complete the synchronisation instruction.
Can repeatedly slamming the door or gate affect synchronisation?
Repeated strong impact may place additional vibration on the internal components. In rare cases, a synchronisation module or internal connection may become loose after extended use.
What should I do if synchronisation stops working?
Check and charge both lock batteries first. If the issue continues, remove the existing synchronisation and pair the locks again. Contact Interlock for further assessment if these steps do not restore the connection.
Looking for a Fast Dual Sync Digital Lock in Singapore?
If you are upgrading your home with:
- A digital gate lock
- A digital door lock
- A synchronised smart lock bundle
- A connected keyless entry system
The Interlock Mercury Door and Gate Lock Bundle is designed to provide the smooth, coordinated entry experience homeowners increasingly expect.
Before recommending a bundle, Interlock can assess your door, gate, existing lock area and door-to-gate distance to confirm compatibility.
Request a Compatibility Assessment
Send us clear photos of your main door, gate, existing locks and the distance between your door and gate. Our team can recommend a suitable Mercury synchronised combination for your entrance.
The stated testing observations apply to compatible Mercury lock combinations tested with both batteries above 50% and door-to-gate distances ranging from approximately 10cm to 50cm. Actual performance may vary according to battery condition, pairing, installation distance, module position, physical impact, mechanical alignment and surrounding conditions.
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