If you see this error message on your touchscreen it means that the touchscreen has lost communication with the main Simon XT panel.
This touch screen is offline. For security system operation, use
the main security panel. Please notify your security provider.
This can be caused by placing the touchscreen too far away from the main panel or by placing the touchscreen near a cordless phone or wireless router. Move any wireless devices away from the touchscreen and then follow the steps in the video below to get the touchscreen working again.