Mitsubishi M68719 is a module used in the Mitsubishi Electric MELSEC-Q Series of Programmable Logic Controllers (PLCs). It is a 16-point input module that can be used to connect 16 digital input signals to the PLC. The module has a built-in LED indicator for each input point, which can be used to monitor the status of the input signals. The module is designed for use in industrial automation applications and is suitable for use in harsh environments. It is also RoHS compliant.(For reference only)
https://www.utsource.net/itm/p/417595.html