Available. The Mitsubishi Electric Q612B is an extension base unit designed for the MELSEC-Q Series programmable logic controllers (PLCs). This unit provides 12 slots for I/O modules and one slot for a power supply module, facilitating the expansion of PLC systems to accommodate additional modules as needed. The Q612B measures 439 mm in width, 98 mm in height, and 44.1 mm in depth, with a weight of 0.48 kg, making it suitable for integration into various industrial automation setups. It is UL listed, ensuring compliance with safety standards. The unit is mounted using M4 screws, with installation holes provided for secure attachment. The Q612B is compatible with the MELSEC-Q Series, offering a reliable solution for modular PLC expansion.