We have an ancient da systems abacus alarm (well that's the panel bit anyway) and it's decided to display "test 03B ok!" on the display panel and is reluctant to do anything else. The 03B bit changes if I press on the keypad (and I think is some hexadecimal zone indicator or something).
The alarm is ancient and I think the supplier is no longer around.
Is there any way to get this unit back to doing what it should do, or will I be calling up an alarm company later today?!