The Legrand / Tynetec ZSA840 Digital Dispersed Alarm Unit is a sleek silver device designed for personal alarms and home security. As a DAU (Digital Alarm Unit), it offers reliable protection and alarm services. This boxed unit comes with a power supply, ensuring that it is ready to function and safeguard your home at all times. With the trusted Tynetec brand behind it, this digital alarm unit provides peace of mind and security for you and your family.