Thatcham alarm

Car Thatcham alarm categories are C1 for alarm and immobiliser and C2>1 for alarm upgrade designed to integrate with an existing C2 immobiliser. Soft top cars should be fitted with a microwave sensor rather than an ultrasonic sensor to protect the interior when the top is down. Some of the best known Thatcham alarms for cars are from Avital, Clifford, Cobra, Gemini, GT, Toad and Viper

Van Thatcham alarm for Light Commercial Vehicles have categories; L1 for alarm and immobiliser and L2>1 for alarm upgrade designed to integrate with an existing L2 immobiliser. Thatcham alarms for vans may require additional doors sensors to be fitted in the cargo area if there is no courtesy light switch as all doors need to be covered by the alarm.

Motor home Thatcham alarm categories are L1 for alarm and immobiliser and L2>1 for alarm upgrade designed to integrate with an existing L2 immobiliser. Thatcham alarms for motorhome have additional inputs for sensors such as; PIR to protect the interior with separate ultrasonic sensor in the cab, bike and gas bottles loops, locker, door and window sensors.

Motorcycle Thatcham alarm categories are MC1 for alarm and immobiliser and MC2>1 for alarm upgrade designed to integrate with an existing MC2 immobiliser. Thatcham alarms for motor bikes are more compact with better waterproofing than car or van alarms

HGV Thatcham alarm Heavy Goods Vehicles categories are H1 for alarm and immobiliser and H2>1 for alarm upgrade designed to integrate with an existing H2 immobiliser. Thatcham alarms for heavy goods vehicles are a higher voltage then car alarms and the immobiliser is designed for diesel engines.