Our company sells a PLC trainning kit and provides plc education service.(PLC : Programmable Logic Controller)The PLC trainning kit have(1) PLC : You can select a PLC manufacturer.(Siemens, Mitsubishi, LS, etc)(2) Input : 32 point, Output : 32 point, AD/ DA module, etc(3) Input button : push button (12), toggle switch (4)(4) Output lamp : green lamp (8), red lamp (8)(5) Input module(32 point) and output module (32 point) can be connected to outside device.(6) There are digital switch (1), digital display unit (1)(7) A/D input : volume register (1) : DC 0~10v, volt display meter (1)(8) D/A output : DC ampere meter (1), 4~20 mA