Key Features . App-enabled alarm systemNo monitoring feesExpandable up to 20 accessories30m rangePart arm for zone controlIn-app controlEasy to install and simple to use The Yale HSA App Enabled Alarm Kit can be remotely controlled via the portable keypad or the app on your smartphone with the ability to part or fully arm the system. All components are wireless and come pre-linked for easy set up and installation. System alerts will be sent by email text and app notifications when the alarm has been triggered. The ability to add up to 20 accessories including sensors means you can customise the system to suit any property needs. What\'s in the Box . 1x HSA Alarm Hub1x Siren1x Dummy Siren1x Remote Keypad2x PIR Motion Detectors1x Door/Window ContactBatteries and; Fixings. .