Cat 1 Alarm for Car and Vans Thatcham Approved Cat 1 logo

When your insurance company asks for a car alarm, they mean a Cat 1 Alarm. Cars, vans and some leisure vehicles may require a Thatcham car alarm to be fully insured. Our Autowatch security systems are on the Category One authorised product list, and are also fitted by a Thatcham and MESF accredited installer.

We provide Cat 1 car alarm installation in the Hampshire, West Sussex, South Guildford, Southampton, Winchester, Portsmouth and Fareham areas.

Autowatch car alarm

457RLi Autowatch car alarm system supplied and fitted for £479 *see notes below


Thatcham Cat 1 Car Alarms

For a system to be insurance approved there are two requirements. Firstly the system must have gone through vigorous testing by Thatcham, meet certain requirements, and be on the Category One, cat 1 alarm, approved product list (please scroll to page 21/23 of above link to see aftermarket devices). Secondly the device must be fitted by an suitably trained and affiliated engineer, ensuring expected installation standards are also met.

Our Thatcham Cat 1 car alarms are approved and fitted by a Thatcham Recognised, and an MESF Accredited Installer.

We provide an MESF certificate with impression stamp (leaves a raised mark through all copies) for insurance purposes.

Autowatch Car Alarm Systems

Our Autowatch car alarm systems are high quality devices with a reassuring long list of features. Doors, boot and bonnet are protected and interior ultrasonic sensors are capable of detecting movement within the cabin space.

Standard user features include the ability to silently arm and disarm the vehicle, as well as giving an audible warning if a door is left open.

If you are looking for a high-quality, low-cost system for insurance purposes then this is the best car alarm choice.

Autowatch 457RLi Listed Features

  • Thatcham Cat 1 car alarm (only when fitted by a Thatcham Recognised Installer - TRI)
  • Interior ultrasonic sensors
  • Autowatch remoteDoor, boot and bonnet protection
  • Two 4-button remotes
  • Indicator light flash
  • 2 auxiliary outputs (both timed)
  • Self arming immobiliser
  • Battery back-up siren
  • Silent arm / disarm available
  • Door open audible warning
  • Dome light supervision
  • Panic alarm facility from remote
  • Anti-tamper security housing

Optional Modules and Sensors Outputs

Please note all of these features will cost extra as they either require additional modules or extra time to install.

  • Shock sensor
  • Microwave sensor
  • Window closure
  • Turbo timer
  • Boot release

Trigger Report Back Facility

If the Autowatch 457RLi car alarm goes off, a record of what caused this trigger can de determined from the 'Trigger Report Back' feature. This is accessed by entering the program code '1,2,3' followed by the code '1,1', instructions on how to do this can be read from Car Security Systems - Programming New Remotes For Autowatch Car Alarms. This is the same code needed to program in a new remote control.

The possible flash codes generated are:

Autowatch 457RLi Car Alarm False Trigger Codes

1 Flash Movement Sensor (Ultrasonic or WPIR)
2 Flashes WPIR Zone (When allocated to its own zone)
3 Flashes Panic
4 Flashes Ignition
5 Flashes Negative Door
6 Flashes Positive Door / Hotwire
7 Flashes Boot
8 Flashes Bonnet

Printable version of Autowatch 457RLi Car Alarm False Trigger Codes.


Trigger information is automatically cleared once alarm has been turned on and off ten times without triggering.


Payment can be made at the time of installation, via our mobile credit card machine.

* Extra Parts and Labour will incur a reasonable additional charge as some vehicles require extra time for fitting e.g. Nissan Elgrand adds £80 to any alarm system, built motorhomes may need extra installation time, and door motor fitting is charged extra on a per door basis.

Contact Dragon Car Audio and Security for more information and to book an installation.

Dragon Car Audio and Security can provide a car alarm for car, van or day campers. Autowatch Cat 1 car alarms are fitted by an Accredited Installer in the Hampshire, West Sussex, South Guildford, Southampton, Winchester, Portsmouth and Fareham areas.


Unit 11, Apex Centre, Speedfields Park, Newgate Lane, Fareham, PO14 1TP. Tel: 01329 446322