The Lot of 9 PLC Direct by Keye D3-Fill Filler Modules is a collection of industrial automation modules designed for PLCs. These filler modules are essential for controlling and monitoring various functions in industrial settings, ensuring efficient and precise automation of processes. Ideal for use in a range of industrial applications, these modules provide reliable and accurate performance for a variety of automation tasks. With the trusted Keye brand and specific model number D3-Fill, these PLC peripheral modules offer dependable operation for your automation needs.