Compared to the CJ1W-MD233
The CJ1W-MD231: The closest functional peer is the CJ1W-MD233, also 16 digital inputs and 16 solid state outputs. The critical difference: the MD231 uses a D-Sub connector, while the MD233 has a rectangular multi-pin connector. Same I/O count, same approvals (CE, cULus, NK), same CJ-series backplane – but the termination change means you cannot drop the MD231 into a panel wired for the MD233 without changing the connector or cable assembly.
Compliance & Approvals
Listed approvals: CE, cULus, NK. Covers European CE-marked installations, UL-listed control panels, and NK-classified marine applications. Documentation supporting these certifications is available from the manufacturer.