The Omron CJ1W-ID261 PLC Input Unit provides 64 DC input points for machines and automation systems that require a higher density of digital field signals. Operating with 24 VDC inputs, the module receives ON/OFF conditions from sensors, switches, contacts, and other digital devices and transfers those states to the Programmable Logic Controller for control-logic processing. Its 64-point configuration allows many field inputs to be integrated into the CJ control architecture without using multiple lower-density input modules. The CJ1W-ID261 therefore supports scalable I/O expansion within the CJ1W Series. It belongs to the high-density PLC input range associated with Omron factory automation.