Thatcham Category 1 alarm
and immobiliser
Thatcham
category 1 is an alarm and immobiliser in one complete system designed
for vehicles without any form of insured approved security.
There
are many Thatcham
category 1 alarms on the market but before making a choice you must
find out if your vehicle has a category 2 immobiliser already installed.
Newer UK spec cars have them factory fitted as standard for the UK market
but if your car has not been important by the manufacturer or is very
old then it is unlikely to be fitted with a cat 2. A Thatcham
category 1 alarm upgrade is all you need for cars with an existing cat
2 immobiliser otherwise choose a cat 1 alarm and immobiliser.
Thatcham
category 1 alarms differ from soft top cars and hard top cars and you
will need to buy an alarm with a microwave interior sensor for an open
top car. All other vehicles can be fitted with a Thatcham
category 1 alarm with either an ultrasonic interior sensor or microwave
sensor.
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