Remote Upgrade alarms are designed for vehicles that have an existing immobiliser but require remote controls to operate it and provide keyless entry. They are also suitable for low-risk vehicles where an insurance standard immobiliser is not required.
If you already have keyless entry and would like an alarm that works from your existing remote then check out the OEM upgrade alarms.
If your vehicle has a factory transponder immobiliser (or an aftermarket immobiliser) but no keyless entry then the following alarms are suitable:
Thatcham CAT 2-1 (Insurance standard alarms systems)
Cobra AK4615 Note: CAN-BUS/OEM upgrade alarm which can have Cobra remote as an option.
Basic remote alarms (None insurance approved)