Mobile personal alarms compared with home-only alarm systems
https://super-wiki.win/index.php/Mobile_personal_alarms_compared_with_home-only_alarm_systems
Home-only alarm systems keep your house safe, but they can't go with you. Mobile personal alarms are small, wearable devices that let you call for help anywhere, whether you're in the garden, shopping, or walking the dog. They use cellular networks instead of a landline, so you're covered even if you're far from the base unit. That's the big difference—mobile alarms are about freedom and independence, while home systems are about securing a property.