The CP1W-8ET is a digital input/output module manufactured by Omron for their CP1 series PLCs. It provides 8 digital input and 8 digital output channels. The module uses a removable terminal block for easy wiring and supports input and output signal voltage levels of 24 VDC. It can be used for various industrial automation applications that require digital I/O control, such as controlling sensors, actuators, and other devices.