The TMD Chain Lock is a keyless chain lock that connects to the TMD Locks app on your smartphone via Bluetooth.

Once you're near your ride, the TMD Chain Lock will make a connection. You can lock or unlock the lock with a single tap on your lock.

The lock also features a built-in alarm, which you can activate via the app or by pressing the button on the lock twice.

Yes, if your phone battery is dead, you can always manually unlock the lock using your unique code, which you can set up in the app. This code can be entered using the button on the lock.

Battery life depends on usage. With normal use, a fully charged battery lasts about 9 months. Charging the battery from 0 to 100% takes about 2 hours.

The alarm emits a sound of approximately 100 decibels. Enough to scare any thief away.

The app lets you unlock your lock, track its last known location, share access with friends or family, and more.

The TMD Chain Lock is ART-certified and approved by insurance companies.

While the lock body is designed to withstand the harshest conditions and attacks. Every component has been engineered to stop attackers.

The TMD Chain Lock is nearly unbeatable, withstanding high-velocity impacts, bolt cutters, and even sophisticated electronic attacks.

We aim to ship your order within 1 business day.

Not satisfied? You can return the product for free within 30 days, provided it is unused and in the original packaging. Please contact support to arrange this.

We offer a 2-year warranty for consumers.