Choose a two-printer model (SPS-340, SPS-345) when a customer receipt and a traditional real-time printed journal is desired for transaction archival. The single printer model is best for receipt-only applications. If you choose the SPS-320 for printing receipts, you can record your journal electronically in the register’s memory. Both provide fast, quiet thermal printing. Drop-in loading simplifies paper changing and virtually eliminates paper jamming.