The Omron CP1W-MAB221 PLC Analog I/O Expansion Unit combines 2 analog inputs and 2 analog outputs for monitoring and controlling analog signals within compact Programmable Logic Controller systems. It supports 0 to 5 V, 1 to 5 V, 0 to 10 V, ±10 V, 0 to 20 mA, and 4 to 20 mA signal ranges, allowing compatible sensors, transmitters, and control devices to interface with the controller. Operating at 24 VDC, the module brings analog measurement and output control into the same expansion architecture for process applications. The CP1W-MAB221 extends the CP1W Series with mixed analog I/O and belongs to the PLC analog expansion range available for Omron control systems.