THATCHAM OE PLIP UPGRADE

Vehicle engine immobilisers are Cat-2 (Electronic/Electromechanical Immobilisers) and full alarm systems are Cat-1 (Electronic Alarm and Immobiliser combined).

The 2-1 category, which refers to a security system that upgrades a Cat-2 (immobiliser only, often fitted as standard) to Cat-1 by adding the siren, internal movement detection, battery back-up and other features essential to achieve Thatcham Cat-1 accreditation.