Smart security for added protection.

Keeping you in control at all times.

Added peace of mind for you and your bike.

AlterLock evolved

AlterLock has evolved even further.
We’ve retained the concept of movement detection alarms and tracking features, while enhancing transmission area, device tracking performance, durability, and uptime. With riders and cyclists in mind, we’ve modernized the functionality everyway conceivable.
The advanced AlterLock Gen3 system bolsters sense of security and amplifies the joy of riding to a new level.

Motion detection alarm for peace of mind

Although taking extra precaution is highly recommended, we have received many reports of cases where the alarm went off causing the perpetrator to fleeing the scene.
In most cases, it is important to prevent theft before it happens.

Evolved transmission performance

When the device detects movement, the device will send out a signal (by Bluetooth for close range and LTE-M / NB-IoT transmission over long distances) to notify the user of the anomaly via a unique notification tone from the app.

Compared to previous model, AlterLock Gen3 boasts significantly improved transmission performance and reception capability in a wide range of areas globally.

Improved tracking performance

In the unlikely event that your bike is stolen, AlterLock can track it using GNSS (GPS & Galileo), Wi-Fi and 4G base station signals to attempt to locate the final location both indoors and outdoors.
AlterLock Gen3 has improved the algorithm for acquiring location information to shorten positioning time and improve accuracy. This new system is the first of its kind in the world.

Unlike loss prevention devices like Bluetooth tracker, AlterLock independently tracks its location location.

Small and lightweight

The device weight is about 50g, which is comparable to a small cycle computer. Since it is sandwiched between the bottle cage and the bike frame, aero performance is not largely affected.

Water and dust resistance

The waterproof and dustproof performance is IP66 which means there is no problem even if you wash your bike while the device is attached to your bike. The housing structure has been greatly improved to enhance waterproof performance and durability for Gen3.

Long run time

By reducing power consumption through advanced programming, Gen3 achieves up to 3 months of run time, which is approximately twice as long as the previous Gen2 model. The charging port uses USB Type-C.

Customer
Reviewer
5/5

Had my LaPierre bike stolen after thieves used a grinder to cut the security. But by coordinating with the local police using the Alterlock positioning the bike was sucessfully recovered. Would highly recommend.

11 months ago
まーちん
Reviewer
4/5

Setup was easy.
The use of AlterLock in addition to the keylock gives me peace of mind.
The volume could be louder.

2 years ago
浩至 内海
Reviewer
4/5

It would let me know if there is something unusual even if I am out of sight... I think this alone is worth installing. I have installed it in both of the cars I own.
But don't be overconfident, do daily test runs, etc. to check whether the alarm goes off normally? Do you receive notifications on your phone? If the system does not notify you of an abnormality, you should check the status of the system.
I had a problem before where no notifications were sent out, and when I contacted support, they kindly told me how to deal with the problem, which was a relief, but I feel that checks should be carried out to avoid missing something that is not working...

2 years ago
ケン
Reviewer
4/5

I'm generally happy with it, but overall I feel like it could still be improved.
I'm hoping for more features and specs in updates and gen3.
Real-time tracking with updates every second or so.
Battery life more than doubled.
Stable Bluetooth connection range.
Connecting, unlocking and locking with Apple Watch.
Vibration + alarm function at 5m of positional movement.
Other functional improvements are expected.
The last major system of vibration detection has a lot of false positives, and I feel it would be easier to use if a system that recognises by GPS position movement could also be added as a mode.

2 years ago
JTO
Reviewer
4/5

It's a lot more stable, but sometimes I get a bad connection. It can be fixed by restarting the device, so it's okay.

2 years ago
T.YAMAGUCHI
Reviewer
5/5

With the wire lock alone, it was unnerving just to be away for a short while, but it gives me peace of mind and allows me to take a break. In case the alarm goes off, I use a smartwatch, which is very convenient for me because I can notice the notification more easily than with my phone.

2 years ago
宮崎伸夫
Reviewer
4/5

I use it together with the Abs Blade Lock.
I haven't yet had a situation where the alarm sounds, but it gives me peace of mind when I'm away from my road bike, for example for lunch.

2 years ago
ヒロシ
Reviewer
4/5

We also use wire locks, but they are not as secure. Road bikes are not cheap, so I can rely on the Alterlock to be as effective as a car security alarm. The only thing I would like to see improved is better battery life. Also, it would be helpful if you could notify me via a notification on my phone when the battery is about to run out.

2 years ago
motomoto302
Reviewer
4/5

I often ride my road bike alone and my breaks are almost always at convenience stores, so I can now go to the toilet without worry that I will be out of sight.
I also feel safe in the fact that it is a deterrent, as habitual thieves will be aware of the famous Alterlock.
The operating sound when locking and unlocking also appeals to those around you.

2 years ago
YT
Reviewer
5/5

It makes me feel very safe and secure away from my bike.

2 years ago
Kat13
Reviewer
5/5

I had it fitted at a bicycle shop. It does not spoil the aesthetics of the bike under the bottle gauge. When I park my bike out of sight, I use a chain lock and here. I think it is a necessity for a good bicycle rider. However, the batteries need to be recharged every time you ride.

2 years ago
K
Reviewer
1/5

I use it inside my house and in a covered bicycle parking area in front of the station, and the GPS works inside my house, but it doesn't pick up the GPS at all in the covered bicycle parking area. I am worried if it really works when stolen.

2 years ago
誠司 関
Reviewer
5/5

Sometimes the notifications don't arrive as often as they are supposed to, but I'm generally satisfied.
I think it's a very good prevention against theft.

2 years ago
安部 孝史
Reviewer
4/5

I've never had it work when I'm parked on my bike yet, so sometimes I wonder if it's safe, but I can think it's safer than not doing anything at all.
In that respect, I'm glad I have it on.

2 years ago
s.m.d
Reviewer
4/5

Operating the app when locking and unlocking the door is a hassle.
There is a lag between launching the app and the Bluetooth connection, which was not as smooth as I had imagined.
The physical buttons also react differently, sometimes they do and sometimes they don't.
The service itself is very good, so it would be nice to be able to lock and unlock more easily.

2 years ago
武藤
Reviewer
3/5

I have been using it for six months.
I am approximately satisfied with the frequency of charging and the accuracy of the locations it displays. I am not sure if it will really help me if I have a problem, as it does not show the location in real time. Also, the location information is sometimes interrupted when you move outside of your home. There is room for improvement in this area, so 3 stars.

2 years ago
貴宏 清水
Reviewer
5/5

I ride solo a lot and was really worried about convenience stores and during meals, but this product has allowed me to enjoy my rides with peace of mind.

2 years ago
橋爪 敬之
Reviewer
4/5

This is a very good product as it improves my worries about theft a lot.
However, I over-torqued the screws and they cracked through the screw holes... out of three. All of them did so.
I thought the torque strength was too sensitive for me.

2 years ago
八木比呂志
Reviewer
5/5

Not only does it prevent theft, but it is also very effective in preventing tampering and making people hesitant to touch it.

2 years ago
YOKO MATSUOKA
Reviewer
5/5

Now you can park your bike with peace of mind!

2 years ago

Media Coverage

Easy Installation

Purchase AlterLock device
Install the AlterLock app
Register your bike information and device in the app
Subscribe to service (in-app purchase)

30-day free trial

A free period of up to 30 days is applies to the initial service contract.
You can cancel at any time, including during the free period.

FAQ

Product name / Model numberAlterLock Gen3 / AL03GB
Dimensions of main unit / WeightLength: 167mm Width: 28mm Thickness: 9mm / 53g *1
BatteryLithium polymer / Up to 3 months runtime *2
Charging portUSB Type-C *3
Operating / Charging temperature-20 – 60°C / 0 – 45°C
Transmission systemShort range: Bluetooth, Long range: LTE-M / NB-IoT *4
Positioning systemGNSS (GPS / Galileo), Wi-Fi, 4G base stations
Sensor3-axis accelerometer
AlarmMaximum 95dB *5
Water and dust resistanceIP66
AccessorySecurity bolt, installation tool, sticker

*1 Includes security bolts.
*2 Varies depending on usage conditions.
*3 Charging cable is not included.
*4 The long-range transmission method automatically changes depending on the region used.
*5 Measured at a distance of 10 cm from the product.

About the AlterLock App

Compatible with smartphones running Android 8.0 or higher or iOS 15 or higher

Service agreement

A service contract is required to use the data transmission and other functions of the AlterLock Gen3 device.

Notification of Bluetooth out of range, location tracking
Obtaining location information through periodic transmission
Crash detection and SMS notification to emergency contacts
Manage up to 3 devices with one service account with no additional charge

AlterLock Gen3 is available in the following countries

Japan, Australia, Belgium, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Latvia, Luxembourg, Netherlands, Norway, Romania, Slovak Republic, Slovenia, Spain, Sweden, United States

*In the UK, Ireland, Italy and Canada, due to connectivity issues with communication providers, the device has been temporarily removed from the communication area.