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Alcohol Ignition Interlock

We supply, fit and calibrate alcohol ignition interlocks for personal and commercial use

An alcohol ignition interlock is a breathalyser with a vehicle immobiliser. The settings on the alcohol ignition interlock device make the person unable to start the engine if a reading above a set limit is produced from a breath test. There are many benefits to an alcohol interlock for personal and commercial use; ultimately it prevents a person from drink-driving.


Drivealyzer Vehicle Breathalyzer

£895.00 Excl. VAT

Dräger Interlock 7500 Vehicle Breathalyzer

£1,595.00 Excl. VAT

Ordering and fitting a vehicle interlock

To purchase an interlock we need to arrange a few things with you first – please contact us in the first instance.

The installation of the interlock is not included in the price; this needs to be arranged separately with the help of our team. A local mechanic specialising in vehicle alarms and immobilisers is usually capable of fitting the device and costs range from £150 – £500 depending type of vehicle.

Included in the price are all the personal settings you require and we can talk you through the process of setting up the device to your requirements.

Vehicle breathalysers for personal use

  • Reassurance that impaired judgement from drinking will not persuade you to drink and drive
  • Complete security that you will not lose your license to drink driving
  • Costs and possibly employment saved from not losing your licence
  • Security that a loved one will not be impaired while on the road (if bought for someone else)
  • Assistance in helping you, or another, in overcoming alcohol addiction

Vehicle breathalysers for commercial use

  • Reassurance that your drivers are fit for duty
  • Compliance to your duty of care to your employees and the public
  • Decreased property damage due to impaired drivers
  • Security when you are not always aware of what your drivers are doing
  • Helping create safer roads

How does a vehicle breathalyser work?

The Interlock consists of two components – the breath alcohol measuring device and the control unit. Before the engine starts the device requests the driver to give a breath sample. The measuring result of the breath alcohol concentration determines whether the control unit releases the starter of the vehicle and the engine can be started.

Devices are configured to your personal requirements; what limit do you want to be set? Do you want the car/device to alert you after a few hours driving for a re-test? How many minutes do you want to be able to stop the car for without a retest, for example when filling up with fuel? We can help you set up your device accordingly.

Is a vehicle breathalyser reliable and accurate?

All our interlocks comply with the European standard EN 50436-2, so accuracy is comparable to that of a police breathalyser. The electro-chemical sensor specifically measures alcohol, which ensures that other exhaled substances do not distort the measurement results.

Testimonials from vehicle interlock customers

‘Having attended a drink awareness course I decided to contact AlcoDigital and consider a breathalyser unit in order to ensure that I was always safe and able to drive my vehicle without the concern of any residual alcohol within my system. One of my main concerns was the morning after the night before as I wanted a system that would be automatic and allow me to know at all times that I was not driving whilst over the legal alcohol limit and as such ensuring the safety of my family and others on the road. I saw on the AlcoDigital site a Drager unit and decided to investigate this further and with the help of AlcoDigital finally found a new unit that could be installed in my vehicle. This unit is connected to the vehicle and a breath test must be given prior to starting the ignition. If the unit detects alcohol over the limit the ignition will not start until a specimen of breath is provided that is under the limit. I am so pleased that I invested in this technology as it provides me with the security and knowledge that I am within the legal limits when driving at all times.’

Henry Charteris – bought the Draeger Interlock 5000

The peace of mind the Draeger vehicle interlock has given to us as a family has been invaluable. Having a family member who has been previously banned for driving under the influence of alcohol , the interlock has taken away all the worry and danger of the possibility of this happening again. Also the interlock has also enabled the family member the freedom of a car but without the risk of ever being able to drink drive. It is both discreet and easy to use. We couldn’t recommend this more highly”.

Chris – bought a Draeger Interlock 5000 for a family member