Use
Alarm behaviour
The alarm on your TMD Chain Lock is smart. It first gives a warning, and only then sounds at full volume. In this article you can read how the pre-alarm and full-alarm behave in detail, so you know exactly how it works. Knowing the specifics outlined in this article is not needed to effectively use the lock. This article is just there for those who are curious how the alarm works under the hood. How the alarm works in a nutshell When the lock detects movement, the pre-alarm sounds asSome readersOpening the lock
In this article you can read how to open your TMD Chain Lock using the lock button or via the app, and what to do if the emergency code starts instead of the lock opening. Requirements for opening You must be connected. The lock must be charged. The app must not be closed. You must keep the app open in the background and not swipe it away. How to open your lock with the lock button (recommended) Approach your lock. Your phone should connect to the lock automaticallySome readersArm and disarm the alarm
The alarm is the built-in theft protection of your TMD Chain Lock. In this article you can see how to arm the alarm, how it is triggered, and how to disarm it. How to arm the alarm when connected Close your lock. Press twice on the lock button. The lock button flashes white twice and you hear two beeps. This confirms activation. How to arm the alarm when disconnected Close your lock. When you are not connected, you can activate the alarm 30 seconds after closingSome readersBattery
In this article you can read how long the battery typically lasts and how to know when it is time to charge. Specifications On average a full battery lasts for 9 months. Charge time from 0 to 100 percent is about 2 hours. You can charge the battery using the included charging cable, which attaches magnetically to the bottom of the lock. How to know if your battery needs charging When the battery is almost empty (below 20%), the lock button will flash orange three timesSome readersLED colors and sounds
The lock button on your TMD Chain Lock uses different colors and sounds to provide feedback on what is happening. In this article you can see an overview of all of these. Event LED behavior Sound Lock is opening Green light One beep Alarm is arming Two white flashes Two beeps Alarm is disarmed One short green flash One short beep Pre-alarm (warning on movement) Three long red flashes Pre-alarm sound Full alarm | Short red flashes | Alarm soundSome readersTMD Chain Lock specifications
This page gives an overview of all TMD Chain Lock models. Here you can compare length, weight, price and available colors for the Mini, Regular and Long versions. Specifications TMD Chain Lock - Mini TMD Chain Lock - Regular TMD Chain Lock - Long Length 70 cm 110 cm 160 cm Weight 1.3 kg 1.7 kg 2.1 kg Price €229 €249 €289 Color Black, Navy and Beige Black, Navy and Beige Black, Navy and Beige Specifications common to all variantsSome readersEmergency code
The emergency code is a pressing sequence you perform on the lock button to open it when you don't have access to your phone. You can set and change the emergency code in the app. When to use the emergency code Your phone battery is empty. You don't have access to your phone. How to enter the emergency code on the lock Make sure your lock is closed. Make sure your lock is not connected to the app. Press and hold the lock button. Four colors will appear in sequenSome readersBattery saving mode
Battery saving mode makes sure your lock uses less energy, so the battery lasts longer. When this mode is enabled, your phone can no longer connect to the lock automatically. You must first press the lock button once to "wake it up" before you can connect to it. You can choose yourself when battery saving mode is active. There are three options for this: Always on Time slots Auto activation Note: if Always on is enabled, the other two options cannot be enabled at the same time. HoweverFew readersFrequently asked questions about the alarm
Below you will find answers to the questions we get most often about the alarm of your TMD Chain Lock. How loud is the alarm? The full alarm has a volume of 100 dB. Can I adjust the alarm volume? No. The alarm always sounds at the fixed volume of 100 dB. Will I get a notification on my phone when the alarm goes off? No, you won't receive a live push notification. As soon as you reconnect to the lock, you can see in the app under "Activity" what time the alarm wentFew readers
App
Firmware updates
Firmware is the built-in software that runs on your lock. Updates improve stability, fix bugs, enhance security, and can add new features. Firmware updates are installed on the lock through the app. How to see if a firmware update is available There will be a banner on the home screen of your app telling you that a new firmware version is available. You can also check this by pressing the menu button in the top right of the home screen and then pressing "Lock settings", and then "FiSome readersFind my lock
With the find my lock functionality you can see the last know location of your lock in the app. How it works The app records the last known location where you used the lock (this is not live GPS tracking). Accuracy depends on your phone’s location services at that moment. Requirements Location permissions are enabled for the app. Location services are enabled for your phone. Internet connection is necessary to see the location. How it works when you are not connSome readersApp permissions
In this article you can read which app permissions are needed on iOS and Android. App permissions Permission Why it is needed Recommended setting Bluetooth Discover and connect to your lock Enabled Location Record locations for activity Always (this also records location when the app is not in foreground) Notifications Inform you about important events Enabled How to enable app permissions iOS Go to Settings. Press "Apps". SelectSome readersActivity
Every action is recorded to provide you with a clear overview of what happened where and when. How to view the activity of your lock Open the app. Press the menu button in the top right of the home screen. Press "Activity". The following actions are recorded Added your lock Opened Closed Alarm armed Alarm disarmed Incorrect emergency code Security delay triggered Location By pressing on an activity you can also see the location of where that activitSome readersShare my lock
You can share your lock with friends or family. By sharing your lock with them, they can easily open your lock with their app. How to invite someone to share your lock Open the app and press on the menu button at the top right of the home screen. Go to "Share". Press "Add". Enter the email address of the person you want to share with. Send the invitation. How to accept an invite to share a lock Download the app. Log in using the same email address that the lock wasSome readersRemove or transfer your lock, or switch phones
In this article you can read how to remove a lock from the app, what to do when you get a new phone, and how to transfer a lock to someone else. Remove a lock from the app Open the app and press the menu button at the top right of the home screen. Press "Lock settings". Choose the option to remove the lock and follow the steps on the screen. Can't remove the lock, for example because you have already sent it back? [Contact support](https://go.crisp.chat/chat/embed/?websiteFew readersFrequently asked questions about the app
Below you will find answers to the questions we get most often about the TMD Locks app. Can I temporarily turn off Bluetooth for my lock? Yes. On the home screen of the app, there is a Bluetooth switch to the right of your lock. When you turn it off, the app no longer connects to the lock. This is useful if your bike is often within range of your phone, for example at home. Turn the switch back on when you want to use the lock. Does the app need to be open to open my lock? No,Few readersFind the serial number of your lock
The serial number is the unique number of your TMD Chain Lock. You need it when you register your lock with your insurer or leasing provider. Because the lock has no physical keys, you enter the serial number in the field that asks for a key number. Find the serial number in the app Open the app. Go to "Lock information". Here you can see the serial number of your lock. Find the serial number on the packaging The serial number is also printed on the packaging of yoFew readers
Troubleshooting
No connection to the lock
When your phone can't connect to your lock, the lock might not open or respond as you expect. In this article you can see how to recognize a missing connection, the most common causes, and the steps to quickly restore the connection. Signs you are not connected The lock starts the emergency code sequence when you try to open with the lock button. The app shows that you are not connected. You are not able to disarm the alarm. Common causes The app doesn't have Bluetooth peSome readersLock is unresponsive
When your lock is unresponsive, in most cases the battery is empty. In this article you can see how to check if the battery is empty, how to get the lock working again, and when to contact support. Most likely cause When the battery is completely empty, the lock will not respond to button presses and will not accept connections. Checks to see if the battery is empty Hold the lock button. If the lock does not open and the emergency code does not start, the battery is most likelySome readersGreen light shows, but the lock does not open
When the lock button turns green, the lock is opening. If you pull too early or too hard, the opening mechanism will get blocked and not open. This is an intentional safety feature. How to fix it Check if there is no tension on the lock chain. Wait a few seconds to let the motor reset. If you listen closely you can hear it reset. Press the lock button again until it turns green. Pull the chain gently. Do not pull hard or twist. If it did not help [Contact support](https:Some readersBattery empty: how to open your lock
When the battery of your TMD Chain Lock is completely empty, the lock no longer responds to the button and does not connect to the app. In this article you can read how to still open your lock, even when you are on the go. How to open the lock Attach the charging cable to the bottom of the lock. It connects magnetically. Plug the USB-C end into a power source. This can be a wall adapter, but also a power bank or your phone (if it has a USB-C port). Let the lock charge for a fewFew readers
Installation and pairing
Pair the lock with your account
In this article you can read the requirements and instructions for how to add your lock to the app. How to start the add lock process If you don't have any locks added to your app yet, then you must press the "Add lock" button on the home screen. If you already have one or multiple locks added to your app, then you must press your currently selected lock in the top left corner of the home screen, and then press the "+" button. How to add your lock Press the lock buttonSome readersQuick start guide: TMD Chain Lock
Follow the below guide to quickly get started with your TMD Chain Lock. 1. Install the app Download the TMD Locks app from the App Store or Google Play Store. Make sure Bluetooth and mobile data or Wi-Fi are enabled on your phone. 2. Allow app permissions Allow Bluetooth access. Allow location access when the app requests it. 3Some readersDownload the app and create an account
In this article you can read how to download the app and create your account. How to download the app and create an account Download the app from the App Store or Google Play Store. Open the app. Press "Create account". Enter your email address. Confirm your email by entering the verification code we send to you. Enter your name. ESome readers
Insurance
How to share activity logs with your insurer
When you file an insurance claim, your insurer may ask for proof of usage of your lock. In this article you can read how to do this on iOS and Android. Include a clear screenshot(s) of: Activity events around the time of the incident. How to take screenshots iOS Open the app. On the home screen press the menu button in the top right of the home screen. Press "Activity". Scroll to the relevant point iSome readersART 2: what it is and why insurers require it
ART is a Dutch certification from Stichting ART that rates the theft resistance of locks. Ratings run from 1 to 5 stars. ART 2 is the standard for bikes, e-bikes and cargo bikes in the Netherlands and Belgium and is accepted by insurers and the bicycle industry as a reliable security benchmark. Who's behind ART testing Stichting ART defines the security requirements and issues the official ART certification label. The practical and attack tests themselves are carried out by SKG-IKOB CertifiSome readersIs the TMD Chain Lock insurance approved?
The short answer is: Yes. Because the TMD Chain Lock holds an ART-2 certification, it meets the strict security requirements set by insurers for bicycle protection. Why ART-2 certification matters For most bicycle and cargo bike insurance policies, a lock with at least an ART-2 rating is the standard requirement. Without this seal of approval, insurers usually won't pay out in the event of theft. With the TMD Chain Lock, you meet the lock requirement of your insurer. The TMD ChFew readers