docs

docs/DEVICE_DISPLAY_SETTINGS.md

@@ -10,6 +10,10 @@ This set of settings allows you to group Devices under different views. The Arch
 
 ![Sattus colors](./img/DEVICE_MANAGEMENT/device_management_display_settings.png)
 
-1. Online (Green) = A device that is no longer marked as a "New Device"
-2. New (Green) = A newly discovered device that is online and is still "ticked" as a "New Device"
-3. New (Grey) = Same as No.2 but device is now offline.
+1. 🔌 Online (Green) = A device that is no longer marked as a "New Device".
+2. 🔌 New (Green) = A newly discovered device that is online and is still marked as a "New Device".
+3. ✖ New (Grey) = Same as No.2 but device is now offline.
+4. ✖ Offline (Grey) = A device that was not detected online in the last scan. 
+5. ✖ Down (Red) = A device that has "Alert Down" marked and has been offline for the time set in the Setting `NTFPRCS_alert_down_time`. 
+
+See also [Notification guide](./NOTIFICATIONS.md).