Wiring flexibility for panel integration
The AJ65SBTB1-32D1 is a 24 V DC input module with 32 points, using a positive/negative common shared type — meaning you can wire it as either sink or source without swapping the module. That's the same as saying it handles both NPN and PNP field devices on the same unit, which saves a spare-part line item if your panel has mixed sensor types. The photocoupler isolation keeps the field wiring galvanically separated from the backplane bus, which matters when you're pulling inputs from a different power supply or a long cable run. Protection degree is IP2X — that's finger-safe on the enclosure side, not sealed against moisture. Mount it inside a cabinet with at least an IP54 rated door if the environment has dust or washdown.