Sam4s NR-500R Series Cash RegisterThe Sam4s NR 510R has a single 57mm wide thermal till roll which can be either be used as receipt or journal while the Sam4s NR 520R has twin rolls, one for the receipt and one for a continuous printed journal. Aside from this, the two models are the same. Both models have a raised keyboard on which we can program up to 12 open department buttons so you can enter a price into the relevant department manually. There is also capacity for up to 1000