Module identity and panel fit
The Mitsubishi AJ65BT-D62D is a 2-channel PLC expansion module in the Mitsubishi Electric AJ65BT series, designed to add two additional I/O or function channels to a Mitsubishi PLC base system.
What the 2-channel count means for your I/O map
The 2-channel designation means the module provides two independent input or output circuits. In a typical Mitsubishi AnS/QnA-series or similar MELSEC rack, this module occupies one slot and draws its power from the backplane; the two channels are addressed sequentially in the PLC's I/O map starting from the slot's base address.