Epson TM-T20III Thermal Receipt Printer: features, specs and who it suits

The Epson TM-T20III is a monochrome thermal receipt printer for point-of-sale use. Small shops, market stalls, cafés and service businesses use this kind of printer to produce a paper receipt at the till. This version connects by USB only and is listed as compatible with the Square Stand and Square Register.

How a thermal printer works

A thermal printer does not use ink or toner. It uses heat on special paper that darkens where the print head warms it. That keeps running costs and upkeep simple, since you only need to keep paper rolls on hand. In general, thermal receipts are printed in black and white only, which matches this printer's monochrome description. Thermal paper also fades over time with heat and light, so receipts are best treated as short-term records.

USB-only connection

The listing is clear that this unit has a USB interface only. It has no Bluetooth or Wi-Fi. That makes setup straightforward for a wired till but means the printer must sit within cable reach of the device that drives it. If you work with a tablet or phone that only has wireless connections, a USB printer may not suit your setup.

Square compatibility

The listing says the printer works with the Square Stand and Square Register, and that you need one of those to use it with Square. It also advises updating the Square app if the printer does not work at first. Software support changes over time, so check Square's current list of supported printers and the model code against your own hardware before you rely on it.

Size and weight

It measures about 11.4 x 11.4 x 7.9 inches (around 29 x 29 x 20 cm) as listed, and weighs 3.1 lb (about 1.4 kg). That is compact enough for a counter, though you should allow room for the paper cover to open and for the receipt to feed out.

Model numbers

The listing title carries the code C31CH51001, while the model field shows C31CH51011A0. Epson uses different codes for variants and regions, so confirm which one you are getting and that it matches what your software expects.

Who it suits

It suits small businesses that use a Square Stand or Square Register and want a simple, wired receipt printer for the counter.

What to check before you buy

• That your register or stand is on the list of compatible hardware, and that the app is up to date.
• That the USB connection works for your layout, since there is no wireless option.
• The paper roll width and type the printer accepts, and where you will buy rolls.
• Counter space for the printer and its paper cover.
• The power supply and cables included in the box.
• Whether you need a cash drawer connection, which the listing does not describe.

The short version

• Monochrome thermal point-of-sale receipt printer from Epson.
• USB only, with no Bluetooth or Wi-Fi.
• Listed as compatible with Square Stand and Square Register.
• Uses thermal paper, so no ink or toner.
• Confirm compatibility and the exact model code before you commit.

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