HomeSiren Jeweller is a smart indoor device that does more than alerting alarms. It can also serve as a security status indicator, notify ​of​ door openings​, and display delays when entering or leaving and after-alarm. The device operates autonomously on pre-installed batteries for up to 5 years and uses wireless Jeweller radio protocol to communicate with a hub or range extender at a distance1 of up to 2,000 m. HomeSiren Jeweller is protected at hardware and software levels and easy to control via Ajax apps.