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  • Width 57 mm
  • Speed 90 mm/s
  • Power supply 4.75V to 9V
  • Roll diameter 50 mm
  • Interface RS232 & USB
  • Wide temperature range -10C to +50C
  • Compact design & small weight

SP3-21 printers are characterized by high printing speed – max 90mm / sec at a relatively low supply voltage.

The easy way to load paper is a great convenience for the user. Printers are equipped with an RS232 and USB interface.

They enable the printing of 2D bar codes. The possibility of battery power allows you to use the printer in portable devices.

SP3-21 are available in two color versions – housing in white or black. Printers are used in medical, measurement and telecommunications equipment as well as in industrial automation

Print method Direct thermal
203 dpi, 8 dots / mm
Paper width
57 mm
Print width/dots in line
48 mm / 384 dots in line
Max. print speed
90 mm/s
Paper thickness 
65 µm
Maks. outer diameter roll
50 mm
Auto-cutter No

RS-232C and USB 2.0

PC437/850/852/857/858/860/863/865/866,WPC1252, Katakana

1D: JAN (EAN)13/8 , CODE39 , ITF , CODABAR , CODE128 , UPC-A/E

2D (opcja): QR , MicroQR , MaxiCode , MicroPDF417 , PDF417 , DataMatrix


DC 4.75 to 9V

Head life
50 km
Operating conditions

-10°C – 50°C (print quality guaranteed from +5°C to +40°C)

Dimensions (W x D x H)
101 x 56.2 x 116 mm

190 g



  • SP3-21 – panel printer
  • SP3-21U – panel printer with the ability to print barcodes 2D
Datasheet SP3-21 ENG File download


See also

Mobilna drukarka termiczna Star Micronics SM-L200

  • Thermal printer
  • Width 57 mm
  • Interface: USB, Bluetooth 3.0 (SPP), 4.0 (BLE iOS)

Paragonowa drukarka termiczna POS Star Micronics TSP800II

  • Thermal printer
  • Width 112 mm (option 80 mm)
  • Speed 180 mm/s
  • Interface to choose: RS232, Centronics, USB, Ethernet, Bluetooth, HIX, WebPrint, AirPrint

Mobilna drukarka termiczna Star Micronics SM-T300DW

  • Thermal printer
  • Width 80 mm
  • Interface: RS-232, WiFi
  • Certificate IP54
  • Windows, Android i iOS™ compatible