Functionally, the machines provide a high-speed, single-station thermal printer that can be setup as a journal for your business records or a receipt printer to issue customers a detail of their purchase. Customer receipts can be customized with a personalized four (4) line header message to identify your business. The two (2) line alpha/numeric operator back-lit LCD display adds a measure confidence for the operator when entering sales. The built-in rear customer LCD display provides confirmation to the customer on items and pricing being entered. Other functionality offered on the Se-S100 series machines is a SD Card slot to backup/re-load program data and sales backup. A paper-savings mode allows retailers to operate without receipt printing or to print one only upon request from a customer. There are 12 department keys provided to track the various general category sales and/or up to 2,000 PLU’s to track individual item sales. Descriptors can be programmed to the departments and PLU’s, so they are easily identified on receipts and reports.