Red Lion Controls LDD00400 Human Machine Interface

Red Lion Controls LDD00400 is a four-digit red large-digit display module from the LDD family, delivering high-visibility numeric readouts for industrial panels. It features four 7-segment red digits with 3.32-inch character height and operates from a 115/230 VAC supply. The enclosure measures 6.00 inches tall by 21.00 inches wide by 3.00 inches deep, making it suitable for panel mounting in compact control cabinets. Historically, the LDD00400 was used with Apollo BCD slave modules to provide a large red display of numeric values in legacy Red Lion automation configurations. The part number LDD00400 identifies this four-digit red display, a compact indicator option for equipment requiring a robust, easy-to-read numeric readout in industrial instrumentation. Manufactured by Red Lion Controls, this device reflects the long-running design lineage of Red Lion’s LDD family of large-digit displays.