Retrieve stored forms & enter variable data using the Keyboard Display Unit (KDU). The KDU features a two line LCD that prompts for input & makes it easy to print labels in a st&-alone mode. The user can print one or several of the same label. Its small size makes it absolutely ideal for applications with space constraints eliminating the need for a full sized PC to input data. The KDU uses an auxiliary DB9 interface for RS232C input. The KDU is designed for use with Zebra desktop printers with a serial port, onboard Flash memory & that use EPL (Eltron Programming Language).