Yale Smart Alarm Starter Kit 1- Alarm Hub; Live Siren; Motion Detector; 2x Door / Window Contacts etc.The Yale Smart Alarm is simple to set up and use, with hassle free installation. The Yale Alarm is designed to protect properties of any size, with the option to easily expand the kit, preventing any potential threats before they even occur. With the Yale Home app, you can control and monitor 4 areas of your home independently, and multiple properties with no need to switch accounts to make multi home security simpler. Tailor your home security alarm