Motion sensor connectivity

Do we have to buy panel to use door/window sensors or other automation devices? can it be integrated with mobile app or Alexa echo?

Yes. An alarm panel is required for service. Sensors communicate via a secure RF signal to the alarm panel. The alarm panel then sends status communication to Mobile control of the system is performed using the app.

You can integrate your account with Alexa for voice control after getting your system connected.

Thanks, I came across ADC-NK-200T hub… not sure If this hub an alternate to panel. I am looking to build home automation and not sure if this hub can control motion sensor, glass break, switches etc…

ADC-NK-200T is the Hub. It is an Automation only device which they sold for use with their Automation only plans. It does not support security alarm monitoring, and we do not currently support that hub.