I'm a newb. I have the nx-12 manual. I've read it all. I have the master code & program code.
I wish to use Feature 6 to dial my mobile in the event of an alarm.
My problem is: When I get to enter/store the data via the keypad the manual states I need to press the [?] key. My keypad obviously has no [?] key anywhere.
What is this [?] key?