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dual zone radar sensor wiring / voltage

Dear All,
I would like to know if these types of sensors, specifically the
DEI 508D if possible, uses positive voltage or negative voltage for the
actual triggers. For example, if the first or second 'zone' is
triggered, does the corresponding wire for that zone send out a
positive or negative voltage to the connected alarm system or a
negative voltage. And, if anyone knows, is that voltage analog or
digital? Thank you very much for your time and information.
Christopher Koeber

Crash Gordon®

Jan 1, 1970
Dunno much about car alarms, but from what I found on google search the blue and green are negative triggers.

green is first stage 'warn away' negative trigger
blue is second stage negative trigger.