Your security system communicates continuously (via broadband and cellular) with the monitoring servers. There is the possibility that an intruder will attempt to defeat your security system by destroying the touchscreen, e.g., Smash & Grab. This is not an effective way to disable the security system.
The system detects a Smash & Grab event when it receives an Entry Delay event from a touchscreen but does not receive an associated Alarm event or Disarm event within the configured window. The central monitoring station contacts the authorities if the touchscreen does not send an alarm or disarm notification after an Entry Delay.
Mere connectivity loss during the Entry Delay period does not trigger a Smash & Grab event as long as the Disarm or Alarm event was received by the server. Finally, it does not matter whether the touchscreen has connectivity to the server only over the broadband or cellular channel.