The Epson TM-T20III is a reliable, high-speed thermal receipt printer designed for retail, restaurant, and service environments.
It offers dependable performance with a built-in auto cutter, drop-in paper loading, and full ESC/POS command compatibility.
This listing includes a US power cord and ships as Like New.
Important Compatibility Note: The TM-T20III with USB interface (C31CH51001) is compatible with Square Stand and Square Register when connected via USB.
It is not Bluetooth or Wi-Fi enabled. If the printer does not appear in the Square app, please ensure the Square app is updated to the latest version before setup.
(Requires official Square hardware that supports USB receipt printers.)
Key Features & Benefits
- Fast Printing Speed: Up to 250 mm/sec for quick, quiet receipts.
- Auto Cutter: Clean, professional tear for every print.
- Standard Paper Width: 80 mm (3-1/8″) standard; supports 58 mm with spacer.
- USB Interface: USB connection only (no Bluetooth or Wi-Fi).
- Square Compatible: Works with Square Stand and Square Register via USB connection.
- ESC/POS Compatible: Standard command set for major POS platforms.
- Drop-In Paper Loading: Quick roll changes reduce downtime.
- Cash Drawer Port: Built-in DK port (RJ-11/12) for compatible cash drawers.
- Energy Efficient: Low power draw for continuous operation.
- US Power Cord Included: Ready for plug-and-play setup.
Specifications
- Brand: Epson
- Model: TM-T20III
- Part Number: C31CH51001 (USB only)
- Print Method: Direct thermal
- Max Print Speed: Up to 250 mm/sec
- Resolution: 203 dpi
- Paper Width: 80 mm (3-1/8″) standard; 58 mm with spacer
- Cutter: Auto cutter
- Interface: USB 2.0 (no Bluetooth or Wi-Fi)
- Cash Drawer Port: 1 × DK port (RJ-11/12)
- Driver Support: Windows, macOS, Linux; OPOS/JPOS
- Emulation: ESC/POS
- Compatibility: Square Stand and Square Register (USB connection only; ensure app is up to date)
- Use Cases: Retail POS, restaurant, café, salon, ticketing, kiosks
- Condition: Like New
Frequently Asked Questions
- Does this printer support Square?
Yes — the USB version (C31CH51001) works with Square Stand and Square Register. It must be connected via USB. Make sure the Square app is fully updated before pairing. - Is this printer wireless?
No. It supports USB only — no Bluetooth or Wi-Fi. - What paper size does it use?
Uses 80 mm thermal rolls, or 58 mm with the included spacer. - Does it include a power cord?
Yes, a US power cord is included in the box. - Can it open a cash drawer?
Yes. The built-in DK port supports compatible RJ-11/12 drawers.