3/4 Button DC12V/Micro USB 5-30V Cycle Delay Timer Control Relay Switch Module
ab 1,95 €
The use of opto isolated input and output,enhanced anti-jamming capabilit. (7) NC: The relay normally closes the interface, and the relay is shorted to COM before the suction is closed. (5) NO: relay normally open interface, the relay is suspended before the suction, after the suction and short circuit with COM.
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