The CardiLink 1 Year Extension Connectivity is a service plan that extends your subscription to CardiLink by an additional year, once it has ended. The programme itself is an advanced active monitoring system. The device checks your defibrillator daily to help ensure it remains fully functional. Through a secure connection, the system automatically checks the status of the AED, its battery condition and pad expiry dates. If an issue is detected, the system will send alerts. Currently, it is compatible with the St John Ambulance HEART AED range.  St John Ambulance acts solely as a reseller of the CardiLink product and is not the manufacturer or provider of any associated service. Customers are advised to review CardiLink's Terms and Conditions before completing their purchase. By purchasing the CardiLink product, Customers acknowledge they have reviewed, and agreed CardiLink's Terms and Conditions, as amended from time to time.