USA

Air Passage Continuity Between Ports "A" and "B"
With 12 Volts DC supply
between terminals 1 and 2 Continuity
With NO 12 Volt DC supply
between terminals 1 and 2 NO Continuity

Air Passage Continuity Between Ports "B" and "C"
With 12 Volts DC supply
between terminals 1 and 2 NO Continuity
With NO 12 Volt DC supply
between terminals 1 and 2 Continuity