Esse-ti ST56 GMV, Быстрое руководство

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Pagina 4 HARDWARE DESCRIPTION
Jumper JP8 for inputs AL1 and AL2
The jumper JP8 (A in picture 1) defines the behaviour of the inputs AL1 and
AL2.
The inputs AL1 and AL2 are at +12V; the alarm occurs when they are closed to
a – terminal (ex: VV2-).
The inputs AL1 and AL2 are at 0V; the alarm occurs when they are closed to
+12V.