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Fitting a Thatcham category 1 alarm

There are 2 main types of Thatcham alarm to consider...

CAT1 alarm and immobiliser (universal, works on all vehicles)
Thatcham category 1  alarm and immobiliser

This type of alarm has a built in category 2 immobiliser for vehicles that have an immobiliser that is not Thatcham approved or vehicles without any form of immobiliser.

Thatcham category 1  alarm and immobiliser


CAT2:1 alarm upgrade (only if you have a CAT2 immobiliser)
Thatcham category 2:1  alarm upgrade

This type of alarm can only be fitted if your vehicle already has a factory fitted Thatcham category 2 immobiliser.

Thatcham category 2:1  alarm upgrade

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Car security Van security Motorbike security HGV security Thatcham security
Car alarms Van alarms Motorbike alarms HGV alarms Thatcham alarms
Car immobilisers Van immobilisers Motorbike immobilisers HGV immobilisers Thatcham immobilisers

Autowatch alarms Clifford alarms Cobra alarms Datatool alarms Gemini alarms
Laserline alarms Meta alarms Scorpion alarms Sigma alarms Toad alarms
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