Locking your bike has never felt this good
TMD Chain Lock
Smart technology. Refined design. Uncompromising protection.
Your phone is your key
Unlock with a simple press of the lock’s button when your phone is nearby. No keys, no fumbling.
Built-in alarm
A powerful 100 dB alarm sounds when tampering is detected, adding an active layer of protection that helps deter unwanted attention.
Soft, tough and light
A soft exterior helps prevent scratches, while the strong, lightweight and flexible sleeve makes the lock easy to handle and carry.
Complete control with the app
The TMD Locks app lets you do so much more than just opening your lock. Manage access, keep track of activity and always know where your lock was last seen - all from one simple, intuitive app.
Manage access
Give friends and family access to your lock without handing over a key. Share access directly from the app and stay in control of who can use it.
Activity insights
See when your lock was used and by whom. Keep track of your own activity and any activity from people you’ve shared access with.
Find your lock
See the last known location of your lock directly in the app, so you can keep track of where it was last used.
More locks coming soon
The TMD Ring Lock and TMD U-Lock are coming soon. Each brings the same keyless experience, thoughtful design and uncompromising approach to bike security.
Security is in our DNA.
TMD Locks is a Dutch company built on more than 20 years of security expertise. As part of TMD Security, we’ve engineered protection for high-value financial infrastructure around the world. Now, we’re bringing that same expertise to the world of cycling - creating smart, beautifully designed security that helps keep your bike protected.
Frequently asked questions
What makes a TMD Smart Lock secure?
Forgetting or losing your keys is finally a thing of the past.
Our smart locks feature a keyless design with no traditional keyhole, making them immune to conventional break-in methods. Common theft techniques are no longer effective; there is simply nothing to drill, pick, or pull.
By combining keyless Proximity Unlock technology with extremely rugged hardware, TMD Smart Locks are certified to both ART-2 and IP57 standards. This ensures our Smart Locks are officially recognized and approved by insurance providers.
How does the TMD Chain Lock work?
The TMD Chain Lock offers a true keyless experience using advanced Bluetooth Proximity Unlock technology. There is absolutely no faff: your smartphone stays in your pocket, and the lock automatically recognizes your unique digital ID as you approach. Simply press the button on the lock once to unlock and ride away.
For added security, the lock features a built-in 100dB alarm. You can easily arm the alarm via the TMD app or by double-pressing the lock button. Once activated, the alarm will trigger instantly if any unauthorized movement is detected, keeping your ride safe and sound.
Can I unlock without my phone?
Yes. Every TMD Lock features a manual override. Simply use the button on the lock to enter the unique security code you’ve set up in the app, ensuring you’re never locked out.
How long does the battery last?
A single charge keeps your lock powered for approximately 9 months under normal use. When it’s time to top up, you’ll be back to 100% in just 2 hours.
How loud is the alarm?
The alarm emits a sound of approximately 100 decibels. Enough to scare any thief away.
What can I do with the TMD Lock App?
The TMD Locks App gives you total control by allowing you to share digital access with friends and family instantly: no physical keys required. You can also monitor real-time activity logs to see exactly who used the lock and track its last known location to ensure it’s always where it should be.
Is the TMD Chain Lock insurance approved?
Yes, the TMD Chain Lock is ART-2 certified. This is the minimum requirement for Dutch and most international theft insurances. You can use the lock with all major insurers, such as ANWB (Unigarant), ENRA, King Polis, Laka, Alteos, Inshared, Be-Insured, Orion, ZLM, and Qover*.
Important notes when applying:
Key Number:
Enter your lock’s serial number in the field where the insurer asks for a key number. In some cases, insurers are already "smart-lock-ready" but still require a key number for their system. If this happens, please use your serial number.
Proof in Case of Theft:
Instead of handing over two physical keys, you provide the digital log file (history) from the TMD app in the event of theft. This serves as official proof that your bike was locked. Through the app, you can easily view and export your history (or take a screenshot). This functions as digital evidence that the bike was correctly locked at the time of the theft. Our team is always available to support you with this.
*Is your insurer not listed? Check your policy regarding the acceptance of smart locks and digital evidence.
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