This AutomationDirect D4-16ND2 unit is a PLC input module that operates on 12-24VDC power supply. It comes with a terminal block cover and is suitable for various industrial automation and motion control applications. The module is designed for use with DirectLogic 405 controller platform and is manufactured in China. The brand name of the module is AutomationDirect and it falls under unit type category. The model number of the module is D4-16ND2.