TM-T20III Thermal Receipt Printer

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The affordable POS printer with reliable performance and added flexibility.

The affordable TM-T20III thermal receipt printer is the perfect solution for retailers looking for reliable performance and the flexibility to support existing POS and mPOS systems. Choose from the Serial, Parallel, wireless or Ethernet model. The Ethernet model makes it easy to print from smart devices with mPOS/tablet POS functionality. With speeds up to 250 mm/second and options to reduce paper usage, the TM-T20III is the smart choice for retailers looking for a fast, efficient POS solution. A reliable performer you can count on, it offers a 150 km printhead1 and an auto-cutter life of 1.5 million cuts1.

  • Affordable — thermal printer designed with the reliability and flexibility that retailers need
  • mPOS/tablet support — Epson ePOS SDK (iOS®/Android) support on the Ethernet model; DHCP is enabled and automatically retrieves the printer IP address
  • Fast print speeds — up to 250 mm/sec
  • Enhanced print options — reduce paper usage up to 30 percent
  • Reliable printhead — 150 km/150 million pulses1
  • Auto-cutter life — 1.5 million cuts1
  • Comprehensive service and support — dedicated technical resource team and customized solutions; 2-year limited warranty

What's in the box:

  • TM-T20III thermal receipt printer
  • Thermal roll paper (starter roll for testing/operating check)
  • Ethernet cable (may not be included depending on the model)
  • AC cable (may not be included depending on the model)
  • Setup guide
  • Wall hanging bracket

Print Other:

Printing Technology: Thermal line printingPrint Speed: Max. 250 mm/sec (9.84"/sec)


Dimensions: 5.51" x 7.83" x 5.75" (140 mm x 199 mm x 146 mm) (W x D x H)Weight: 3.75lb (1.7 kg)Safety Approvals:
  • EMI Standards: FCC/ICES-003 Class A/NMB-3 (A)
  • Safety Standards: UL60950-1/CSA C22.2 No.60950-1
  • Case Color: Epson BlackWarranty: 2-year standard limited warranty

Print Fonts:

Column Capacity: Standard:
  • Paper width 80 mm: 48/64 columns
  • Paper width 58 mm: 35/46 columns

42-column Mode:
  • Paper width 80 mm: 42/60 columns
  • Paper width 58 mm: 42/31 columns
  • Character Size (W x H) 0.08 x 2.13
Character Size: 0.08 x 2.13 mm and 1.25 x 3.00 mmFonts: 9 x 17 and 12 x 24 dots/character (W x H)Character Set: 95 Alphanumeric, 18 International, 128 x 43 GraphicCharacters per Inch: 22.6 and 16.9 cpiBarcode: UPC-A/E, JAN 13 (EAN 13), JAN 8 (EAN), Code 39/93/128, CODABAR (NW-7) QR-CODE, MaxiCode, PDF417, Composite Symbology, GS1-128, GS1 DataBar, 2DGS1 DataBar, ITF, Datamatrix, Aztec

Media Handling:

Media Dimensions:
  • 80 mm: 79.5 ± 0.5 x 83 mm
  • 3.13" ± 0.02" (width) x 3.27" (roll diameter)
  • 58 mm: 57.5 ± 0.5 x 83 mm
  • 2.26" ± 0.02" (width) x 3.27" (roll diameter)
  • Thickness 48 – 80 μm


Standard Connectivity:
  • Built-in USB + Serial Interface
  • Built-in USB + Parallel Interface
  • Ethernet Interface
  • Wireless Interface (Ethernet + OT-WL06); 802.11 b/g/n/ac (Wi-Fi® 5GHz) Dual Band
Printing from a Mobile Device:
  • Supported (mobile) operating systems: Wireless (802.11), iOS, Android and Windows® operating systems
  • Epson ePOS Technology: Supports ePOS service for direct printing from mobile devices or web-based applications

POS Details:

  • MTBF: 360,000 hours1
  • MCBF: 60,000,000 lines1
  • Auto cutter: 1.5 million cuts1
  • D.K.D.: 2 driversSoftware Included:
    • Drivers and tool software for PC POS (APD, OPOS, JavaPOS, OPOS NET)
    • TM Virtual port driver
    • Linux® Cups driver
    • macOS®
    • OS X®
    • Driver
    • TM-T20III utility
    • Deployment tool
    • Monitoring tool
    • Epson Net Config (Windows, Mac®)
    • ePOS SDK
    • External buzzer unit (0T-BZ20)
    • Horizontal/vertical on counter/vertical on wall with wall hanging bracket


Power Supply Voltage: 24 VDC ± 7%Power Consumption:
  • Operating: Approx. 29.5 W
  • Standby: Approx. 0.80 W
Power Source: 100 24 VDC ± 7%, 50/60 Hz, External (AC cable included)

Service Plans:

1-Year Return for Repair Extended Service Plan

We know protecting your investment is important. Epson Preferred Plus Extended Service Plans offer peace of mind beyond the device’s limited warranty and help keep you up and running — because we understand there’s simply no time for downtime.


1 Epson’s statements about reliability levels are only estimates based on normal use of the printer using tested media only. See for more information on Tested Media. These reliability statements are not warranties of the media or Epson’s printers, and the only warranties for printers are the limited warranty statements for each printer.