TM-T20III Thermal Receipt Printer

The affordable POS printer with reliable performance and added flexibility.

Affordable — thermal printer designed with the reliability and flexibility that retailers need

mPOS/tablet support1 — 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


Print Method Thermal line printing

Print Speed Max. 250 mm/sec (9.84"/sec)

Fonts 9 x 17 and 12 x 24 dots/character (W x H)

Column Capacity


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 mm and 1.25 x 3.00 mm

Character Set 95 Alphanumeric, 18 International, 128 x 43 Graphic

Barcode 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

Characters Per Inch 22.6 and 16.9 cpi

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 ?m



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

D.K.D. 2 drivers

Dimensions (W x D x H) 5.51" x 7.83" x 5.75" (140 mm x 199 mm x 146 mm)

Weight 3.75 lb (1.7 kg)

EMI Standards FCC/ICES-003 Class A/NMB-3 (A)

Safety Standards UL60950-1/CSA C22.2 No.60950-1

Case Color Epson Black


MTBF: 360,000 hours

MCBF: 60,000,000 lines

Auto cutter: 1.5 million cuts

Options External buzzer unit (0T-BZ20)

Installation 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)


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

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


2-year standard limited warranty

Eco Features

RoHS compliant

Multiple models are ENERGY STAR® qualified

Recyclable product2

Epson America, Inc. is a SmartWay® Transport Partner3

Ordering Information

TM-T20III USB + Serial - C31CH51001

TM-T20III USB + Parallel - C31CH51A9981

TM-T20III Ethernet - C31CH51A9972

TM-T20III Wireless - C31CH51A9991

OT-WL06 Optional Wireless Adapter - C32C891321

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