The "brain" of the alarm system,with sound&flash alert,instant alert,view all devices status on APP anytime anywhere. Works with Amazon Alexa for voice control WIFI enabled cloud security alarm system App-based control and monitoring,no monthly fee,no contract. Know exact sensor that triggered in seconds Plug and paly,esay setup in less than ten minutes Change settings and get live updates from miles away View the entire system or a single sensor anywhere anytime Easy to remove and take with you Built-in strobe siren, 110 decibels of volume Customize your system,Expandable,Supports up to 50 wireless accessories Custom alert for each sensor/detector Alarm history can be stored permanently More than just an alarm system,Doorbell and Video monitoring are optional