Cellular medical alert systems are a way of giving your loved ones the ability to monitor and respond to your health conditions remotely. They work by connecting your phone to a monitoring system, which then sends alerts to your phone if you start to experience symptoms of a medical condition. The most common type of Cellular Medical Alert Systems is the pendant, which is worn around the neck. The pendant connects to a monitoring system that can send notifications to your phone if you experience any symptoms of a medical condition. There are also mobile apps that can be downloaded onto your phone that can send notifications if you start to experience symptoms of a medical condition.