Holmbergs Safety Solutions

eBuckle by Holmbergs™

Next-gen safety support

Meet eBuckle by Holmbergs™, the smart safety buckle engineered to help protect every child on every ride. Built on more than 50 years of Holmbergs leadership in child safety.

Next‑generation parents and guardians deserve next‑generation safety. eBuckle by Holmbergs™ delivers with installation support features such as Tightening Support™ for a tighter harness fit, Unbuckle Alert™ for instant notification the moment the buckle is released and Abandon Alert™ to protect children from accidentally being abandoned in vehicles.

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New smart safety features with eBuckle by Holmbergs™

eBuckle by Holmbergs™ features Tightening Support™, Unbuckle Alert™ and Abandon Alert™ giving the next-generation safety support.

eBuckle by Holmbergs™ offering three features:

Holmbergs DigitalSafety™

Tightening Support™ Step-by-step

Tightening Support™ provides installation support: reminding and guides to tighten the harness.

Red light indicates that the harness is too lose and reminds the guardian to tighten the harness. Green solid light confirms that tightening has been done.

Tightening Support™: Explore the feature

Next-gen safety support with Tightening Support™ by Holmbergs, because tighter is safer. Make every buckle up smarter. Tightening Support™ provides intuitive guidance to help aim for a snug harness tension.


“I love the simple LED indicator, it gives me instant feedback when I’ve tightened.”
– Björn, dad to a 2-year-old


“It’s reassuring to get a audible feedback during installation. Early on, that tone often reminded me to tighten a bit more when I’d forgotten in the day-to-day rush, so I genuinely believe it improves safety.”
– Jennifer, mom to a 2-year-old

Child car seats with eBuckle by Holmbergs™

These child car seats now feature the innovative eBuckle by Holmbergs™, including Tightening Support™ and Unbuckle Alert™. Smarter safety – built in.

Misuse alert:

Almost 50% with slack in the harness

Child car seat safety starts with installation. One of the most common misuse is slack in the harness. A study has shown that almost 50% of child car seats had slack in the harness*. eBuckle by Holmbergs™ helps prevent misuse with guided tightening. Supporting for a safer, more snug fit on every journey.

Next level safety support

Holmbergs DigitalSafety™

Let’s take a look at each of them.

Available with different features, the new eBuckle by Holmbergs™ buckles up and unbuckles like our standard safety buckles, but offers new safety support features.

The app is what makes you a truly next level safety provider. The Holmbergs DigitalSafety™ app not only supports with safety alerts as Tightening Support™, Unbuckle Alert™ and Abandon Alert™, but also lets you communicate directly with the app user.

Holmbergs DigitalSafety mobile App icon
Salt spray test at buckles
Testing on another level

Certified safety

Our digital solutions are tested against the required standards, and beyond, with in-depth testing across reliability, real‑world use and long-term performance. Safety never stops at Holmbergs.

Testing and quality

Beyond safety solutions

Holmbergs safety services

Frequently asked questions

Knowledge base

We’ve compiled the answers to the most frequently asked questions about eBuckle by Holmbergs™ here. If you have any further questions, please reach out to us.

Yes, close to. There are no extra components, meaning the belt system with eBuckle by Holmbergs™ can be assembled just as easy as any other belt system.

Yes, it requires a CR2032 battery. The battery will last for approximately one year and can easily be changed. Just loosen the screw and remove the battery lid to reach the battery.

Holmbergs DigitalSafety™ required a hub.

With eBuckle by Holmbergs™ everything is built in. Tightening Support™ is only available in eBuckle by Holmbergs™.

No, you can’t choose different sounds.

eBuckle by Holmbergs™ complies to RED and CB+CE safety directives (among others).

· Red light
When the buckle is closed, the tightening check begins.

· Red blinking light & sound
If tightening hasn’t been done, or if the harness isn’t tight, the reminder will to alert you that you have to tighten more. The alarm starts 10 seconds after the buckle is closed.

· Green blinking light
When tightening has reached defined level, eBuckle by Holmbergs™ will check for 5 seconds that the tension stays the same. If not, it will go back to reminding you to tighten (red light blinking and sound).

· Green light & sound
If tension stays at defined level there will be a green light and sound to confirm that tightening has been done. The green light will turn off after 5 seconds and the buckle will stop measure the tension.

If you have the app, you can also have a notification/reminder in the app.

We cannot guarantee a perfect tightened harness, as the tightening of the harness straps may vary depending on circumstances, for example the use of different inlays, height adjustments, friction or the child’s clothing. Always ensure that the harness is adjusted correctly for the child’s safety. The Tightening Support™ cannot replace the correct tightening or monitoring of the harness by an adult. Holmbergs cannot be held liable for damage to persons and things, of any nature, arising in connection with the use of the Tightening Support™.

You need the buckle with Bluetooth connectivity to be able to use the Abandon Alert™ feature, and to connect to the phone and send notifications.

The alarm is triggered when the eBuckle by Holmbergs™ is buckled and connected to the app and the mobile phone’s Bluetooth connection to the child seat is lost. (This happens when the phone is taken about 5-20 meters away from the eBuckle by Holmbergs™.)

1. A notification is sent 15 seconds after the Bluetooth connection is lost.
2. An alarm sounds on the phone after 2 minutes if the initial notification is not disabled. The alarm will sound even if the phone is muted.
3. A text message with the vehicle’s GPS position will be sent to the emergency contacts saved in the app after 2 minutes if the alarm is not disabled.
The text message will be sent to all emergency contacts at the same time.

If the child is left buckled in the car, a person leaving the car (while being connected with the eBuckle by Holmbergs™), will receive a “child left alone alert” message on their phone. The alarm will only be sent to the phone leaving the car and not to any other phone connected to the child car seat.

The app always has to be “active in the background” to work. If a person “force quits” the app, the Bluetooth communication between the app and the child seat will cease and the alarm cannot be triggered.

eBuckle by Holmbergs™ makes a 3-beep sound when the buckle is opened. The 3-beep sound is also repeated one more time. This is a support to alert the caregiver that the buckle has been opened.

If you have the app, you can also have a notification in the app.

· Abandon Alert™ feature
· It can help parents with the correct car seat installation (installation instruction in the app)
· It simplifies communication with the car seat user (with safety and marketing messages)
· It lets you know more about your customer and your car seat’s life-cycle.

The one way communication from the buckle to the app is done via Bluetooth Low Energy.

Holmbergs DigitalSafety™ app will collect the buckle ID, user’s contact information and the child’s birthday.

Not at the moment, integration with Apple Car Play and Android Auto is coming soon.

Yes. Holmbergs DigitalSafety™ works with both iOS and Android devices.

It works with iOS version 15 and up and Android version 11 and up.

We offer eBuckle by Holmbergs™ with, and without Bluetooth. If you want the feature Abandon Alert™ you need the buckle with Bluetooth.

The Holmbergs DigitalSafety™ app can send the following notifications:

· Child is buckled
· Tightening Support™
· Child is unbuckled (Unbuckle Alert™)
· Child is left alone (Abandon Alert™)
· Low battery level
· Emergency text message sent
· And more…

The following items can be altered in the DigitalSafety™ app’s internal settings or in the mobile phone’s DigitalSafety™ app settings:

· Disable/Enable notifications
· Disable/Enable Abandon Alert™

Nice to meet you

Questions? Comments? We welcome them all. Please reach out.

Stefan Svensson

Stefan Svensson

Sales Director – Global

stefan.svensson@holmbergs.se

+46 70 548 43 23

Daniel Angerer

Daniel Angerer

Sales Manager – Europe

daniel.angerer@holmbergs.se

+43 664 5394 431

Tim Cathrine

Tim Catherine

Sales Director – North America

tim.catherine@holmbergs.se

+ 1 317 674 2836

Jim Gold

Jim Gould

Key Account Manager – North America

jim.gould@holmbergs.se

+1 317 650 1142

Tony Hong

Tony Hong

Account Manager & Business Development China

tony.hong@holmbergs.se

+86 1386 2606 212

Sara Zhang

Sara Zhang

Account Manager – South China

sara.zhang@holmbergs.se

+86 138 2330 5075

Source: German Insurers Association/ Insurers Accident Research. “Use of child restraint Systems – Compact accident research“ (October 2018)