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Proximity Sensors: NO (Normal Open) and NC (Normal Close)

FAQ No. FAQ00391

Primary Contents

Question

What is "NO (normal open)"? What is "NC (normal close)"?

Answer

NO:

When there is a sensing object within sensing range, transistor output is ON.

NC:

When there is not a sensing object within sensing range, transistor output is ON.

NO/NC selectable:

NO/NC selectable is by switch etc.