2-1 Upgrade Alarm - A Car Immobiliser Becomes Full Alarm SystemThatcham Approved Cat 1 logo

Clifford Authorised Installer For vehicles with CANbus wiring Clifford have produced a 2-1 upgrade alarm. A car Category 2 immobiliser fitted when the car was manufactured, can then become a full Category 1 security system. For vehicles with CANbus wiring an add on car alarm is your only option ensuring correct functionality of the system and your car.

Dragon Car Audio & Security provide expert car alarm fitting for Portsmouth, Southampton, Winchester, Chichester, Gosport, Fareham, East Hampshire & West Sussex areas.

2-1 upgrade alarm showing brain siren and bight blue LED

Clifford 2 to 1 alarm supplied & fitted for £499 *see notes below

Thatcham Car Alarms

Clifford 2-1 upgrades are Thatcham car alarms, meaning they have passed tests set by Thatcham and are insurance compliant. For a system to achieve full cat 1 status it must also be fitted to Category 1 standards. By being part of the Thatcham Recognised installer scheme, and MESF Approved Installers we are suitably trained and affiliated, this allows us to provide valid Cat 1 certification for insurance purposes.

Clifford Add On Car Alarm

These Clifford add on car alarm systems will upgrade keyless entry systems and can be further enhanced with the addition of aftermarket options such as tilt/motion sensor, glass tamper sensor and dual zone proximity sensors.  

New systems are supplied with ultrasonic sensors, battery backup siren as well as the classic Clifford blue LED status indicator, to be fitted on the dash. With these systems you continue to use your original OEM factory remote controls and therefore no new remotes are supplied.

There are three different hardware platforms, covering almost all new makes and model of cars. Each alarm is then programmed to match your vehicle type, allowing for each car type’s individual electronic needs.

OEM CAN Alarms Listed Features

  • Ultrasonic protection
  • Thatcham Category 1 system
  • Uses vehicle original remotes
  • Clifford bright Blue LED
  • Indicator light flash
  • Battery backup siren
  • 1 auxiliary channel output
  • 3 different versions cover most make and model of vehicle

Additional Options

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

  • Tilt/motion sensor
  • Dual stage vibration/impact sensor
  • Glass tamper sensor
  • Dual zone proximity sensor
  • Automatic head light activation
  • Comfort Closure (depends on car)

* 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.

This alarm takes about 3 hours to fit, so please allow us a morning or afternoon to upgrade your system.

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

Contact Dragon Car Audio & Security for more information or to book an appointment.

These Clifford car alarm systems give full security for Cat 2 vehicles. We can supply and expertly fit a 2-1 upgrade alarm for Southampton, Winchester, Meon Valley, Portsmouth, Fareham, Gosport, Petersfield, Chichester, Bognor Regis, East Hampshire & West Sussex areas.


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