Alcohol Interlock Systems in Grafton

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A Person is Holding a Car Key in Their Hand — Clarence Valley Auto Electrical in South Grafton, NSW

Drive With Confidence

At Clarence Valley Auto Electrical in Grafton, we’re committed to providing you peace of mind. Specialising in alcohol interlock systems, we offer comprehensive installation, maintenance and calibration services tailored to your vehicle.


Our knowledgeable team assesses your situation, delivering resourceful solutions that get you back on the road swiftly and safely.


Alcohol interlock systems are essential for ensuring road safety. These devices play a role in reducing accidents by enforcing responsible driving behaviour. Proper installation and maintenance of interlock systems are vital for their reliable function to protect both the driver and the public.


If you’re looking for a dependable service, reach out to us today on (02) 6643 5468 to schedule your service.

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Why Alcohol Interlocks Are Important

  • Ensures legal compliance with state regulations
  • Increases road safety for you & others
  • Option to help ensure responsible driving


Understanding the importance of alcohol interlock systems is crucial for every road user. It’s not just about complying with legal standards; it’s about taking responsibility for your safety and that of others.


At Clarence Valley Auto Electrical, we believe in the importance of these systems and are here to assist you through every step. Our service involves installing a range of interlock system models, ensuring they’re calibrated precisely for reliable performance.


We’re quick-thinking when it comes to troubleshooting, making the process as seamless as possible for you.


For detailed information, call us today—let’s make our roads safer together.

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A Person is Holding a Remote Control in Front of a White Car — Clarence Valley Auto Electrical in South Grafton, NSW

How does an alcohol interlock device work in a vehicle?

An alcohol interlock requires the driver to provide a breath sample before the engine will start. If the device detects alcohol above a preset limit, the vehicle remains immobilised. Many systems also request random “rolling” breath tests while driving to ensure continued compliance.

Who is required to have an interlock device installed?

Interlock devices are typically mandated for drivers convicted of drink driving offences, depending on local laws and offence severity. Requirements vary by state, including how long the device must remain installed. Participation is usually part of a legal or licensing condition rather than optional.

What happens if you fail or miss a breath test?

Failing a test will prevent the vehicle from starting, and the event is recorded by the device. Missing or refusing a rolling test may trigger alerts such as lights or alarms and can also be logged as a violation. Repeated issues can lead to extended program periods or further penalties.