Concept of Digital Inputs Contacts (NO-NC)

[@Ravi_for_u]

Thanks for sharing ur knowledge sir..

[@Nagrajbabloo]

Good work buddy

[@AFSARmohd999]

Why always use in low parameters NO contact ?

[@instrumentationandsolution5013]

The loop should be close loop so if anything happens (wire broken or fuse blown or sensor damaged etc) in that loop then alarm will be generated for safety purpose .