Epson TM-T20III USB + Serial Thermal Receipt Printer – 203 dpi, 80 mm Paper, Auto Cutter

The Epson TM-T20III (USB + Serial, model C31CH51011A0) is a reliable, cost-effective thermal receipt printer ideal for everyday POS applications like retail shops, restaurants, kiosks, and small businesses. With dual interface support (USB + RS-232 serial), it integrates easily into existing POS systems.

Printing Performance

• It offers a maximum print speed of 250 mm/s, ensuring quick receipt generation to reduce customer wait times. 

• The printer uses thermal line printing (no ink or toner) at 203 dpi (203 × 203), producing clear alphanumeric text, barcode output, and graphics. 

Paper / Media Handling

• Compatible with 80 mm and 58 mm paper rolls, with roll diameters up to ~83 mm depth. 

• The model includes a partial auto-cutter mechanism rated for up to 1.5 million cuts. 

• It has built-in sensors for paper end, paper near end, and cover open. 

Connectivity & Integration

• Comes with USB 2.0 connectivity and RS-232 serial interface (C31CH51011A0 version). 

• Epson offers multiple variants, including USB + Serial, Ethernet, wireless options. 

• Supports Epson’s ePOS SDK for mobile printing and web-based POS solutions (for Ethernet / wireless variants). 

Durability & Reliability

• Printhead is rated for 150 km of printing / 150 million pulses. 

• Cutter life is rated for 1.5 million cuts. 

• Epson states the mechanism life is 15 million lines and MTBF of ~ 360,000 hours. 

Dimensions, Power & Miscellaneous

• Dimensions: 140 × 199 × 146 mm (W × D × H) 

• Weight: ~ 1.7 kg 

• Power: 24 V DC input, external AC + 29.5 W typical consumption, ~0.80 W idle. 

• Operating environment: 5 °C to 45 °C, humidity 10% – 90%, storage ranges –10 °C to 50 °C.