The Mitsubishi AJ65SBTB1-32DT is a CC-Link remote I/O station delivering 16 DC inputs (sink type, 24 VDC, 7 mA typical) and 16 transistor outputs (sink type, 24 VDC, 0.5 A per point, 3.6 A per common bus). Input isolation is photocoupler; output side adds overload, overvoltage, and overheat protection — a step up from basic fuse-only modules. Power draw: 60 mA at 24 VDC with all points ON, so the station adds roughly 1.5 W to the 24V rail.
The NZ2EX2B1-16D is a 16-point DC input module for the MELSEC iQ‑F series — same function class but no outputs, no CC‑Link interface, and a different physical footprint (slim 12mm slice vs 179mm wide standalone block). It is not a drop‑in second‑source. For a pure input expansion on an iQ‑F base it is the modern equivalent, but the AJ65SBTB1-32DT remains the correct fit for CC‑Link networks needing combined I/O in a single addressed station.
Panel‑mount only: 179 mm wide × 40 mm deep, rated IP2X. Pollution degree 2, overvoltage category II. Input supply tolerates 19.2–26.4 VDC (ripple ≤5%), so it rides through weak 24 V bus conditions. Output common is 32 points per common on a trapezoid terminal block — plan wire routing to keep the 3.6 A common limit. Surge suppression via zener diode on outputs. No corrosive gas environment specified; storage at 10–90% RH non‑condensing.