This thermal printer will print simple strings passed to it via TTL serial. It can also print simple bitmaps and generate barcodes in several different formats. It will accept 2.25" (57mm) wide thermal paper with a max diameter of 1.5" (39mm). The back panel has 2 3-pin connectors; one for power and one for serial communications. The thermal printer ships with default 19200bps baud rate. If you're using this printer in conjunction with an Arduino, you're going to need to connect it to the "Vin" pin and attach an external power supply, as the printer will draw more current than USB is capable of delivering. We've found that a 5V wall adapter works best.
You will find the thermal printer paper on our store here.