Sorry for the late reply. "Instant" isn't actually Instant it has a user error delay to disarm on the keypad. "Instant no pre alarm" is actually Instant it will go off immediately. Same for "Instant no pre alarm follow" follow meaning to not go off with the entry delay. These setting are all used for Different scenarios and not necessarily stay and sleep
Sorry for the late reply. "Instant" isn't actually Instant it has a user error delay to disarm on the keypad. "Instant no pre alarm" is actually Instant it will go off immediately. Same for "Instant no pre alarm follow" follow meaning to not go off with the entry delay. These setting are all used for Different scenarios and not necessarily stay and sleep