This product is an interface module that performs digital signal input and output to external devices.Connect to the controller module of the F & Amp; EIT series.In addition, you can expand the number of impactories by connecting to the Do-16 (USB) GY.Also, since the CPU that controls external signals and modules is insulated by photocoupla, it does not provide an external electrical effect on the host computer.You can output up to 16 points in one module.- [Extended module] Bus specification F & Amp; EIT Stack Size F & Amp; EIT 1u Used connector - [Digital input/output] number of input points - Output points 16 points two -way score - Response speed (input) - Response speed (output) 1msec (max.) Operate voltage (input) - Operate voltage (output) 12-48VDC input circuit - Output circuit Photoba Plastic Insulation Open Collector Output (Sink Type) Built -in power supply -