VEVOR RTP15WS115V Benutzerhandbuch Seite 6

II low-voltage circuit. To control a thermostatic circuit, the COM and NO
connections from the safety switch are to be wired in series with the
low-voltage thermostat circuit to shut down the heating/AC circuit. The
COM and NC switch contacts may be used to actuate a low-voltage alarm
circuit (connected in series) if the heating/cooling system cannot be
disrupted. The safety switch comes from the factory with leads connected
to the COM and NO switch terminals. Typical hook-up of "NC" circuits
would be (Figures 2 & 3),
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