Page top

Lead Contents

FAQ00391 of Proximity Sensors FAQ

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.