Info Byte: What Do NC and NO Mean? - Technical Articles
https://control.com/technical-articles/info-byte-what-do-normally-open-and-normally-closed-actually-mean/
WebDec 5, 2023 · ‘Normally open’ (also called N/O, N.O., or simply NO) means that the switch will be in the open position (no electricity flows) except when the input signal is provided. As soon as the input energy is removed, the circuit will return back to the open position, and electricity will cease to flow.
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