Model: 1756-IB16 16 point digital 24V DC current input module 1756-IB16D 16 point digital 24V DC input module for current diagnosis 1756-IB16I 16 point digital quantity 24V DC current isolated input module 1756-IB32 32 point digital 24V DC current input module 1756-IB32D 32 point digital 24V DC input module for current diagnosis 1756-IB16ISOE 16 point digital quantity 24V DC injection current electronic isolation input module 1756-IV16 16 point digital 24V DC source current