It is a digital input module belonging to the CJ-series PLC .
Omron Plc Module
CJ1W-PA205R
CJ1W-ID261
CJ1W-PA202
CJ1W-DRM21
CJ1W-OC211
CJ1W-AD081-V1
CJ1W-PD025
CJ1W-ID211
CJ1W-CT021
CJ1W-OD212
CJ1W-IC101
CJ2M-CPU33
CJ1W-II101
CJ1W-OD261-CHN