When the X500 panel blinks there are 3 different possible causes:
1. There has been recorded a voice message and the panel is showing this can be played back by blinking. Hold the loudspeaker button next to the number 3 for about 3 seconds until the voice message is being played. When it's done the blinking should be gone.
2. There has been an alarm. The panel display will show the number of the sensor which had been triggered. Disarm the system again to make the panel stop blinking.
3. The panel is almost running out of battery. This can only be occuring when the system is running on the internal battery only. Plug in the power adapter so the internal battery will charge again and leave the power adapter plugged in for normal operation.