Woosim Porti SP Panel Printer Series

These are the smallest panel mounted printers available. The absolutely tiny Porti SP20 is only 53mm wide by 44mm high and less than 25mm deep. It weighs only 47g! This unbelievable device prints up to 24 characters per line on a 37mm wide direct thermal paper roll. It is absolutely perfect for small, portable instruments requiring a hard copy facility. The SP30 offers a longer paper roll capacity.

Porti SP20

Porti SP20 printer

Features & Benefits

  • Ultra slimline - fits easily into compact equipment
  • High speed (50mm/second) - for fast reporting
  • High resolution (203 dpi: 8 dots/mm) - up to 24 characters per line
  • Supports text and graphic printing - for charts or logos
  • CLAMSHELL design - for easy, front access paper loading
  • RS232C or TTL interface - compatible with most equipment
  • 5V DC powered - for mobile, battery powered applications
  • SP20 - 20mm diameter roll - slimline for the most compact equipment
  • SP30 - 30mm diameter roll - for more than twice the roll length

Porti SP Series Specifications

Printing System Direct Thermal, Clamshell Easy load
Case Colour(s) Black or White
Cutting System Tear bar
Media Thermal paper roll
Paper width 37mm
Roll Diameter 20mm 30mm
Roll Length 5m (Note *1) 11m (Note *1)
Characters per line 24
Character size 8x16, 9x24 dots
Resolution 203 dpi, 8 dots/mm
Print width 1 inch (24mm), 192 dots
Printing speed 50mm/second
Dimensions (WxHxD) 53 x 44.2 x 24.4mm 53 x 62 x 33.8mm
Panel Cutout (WxH) 51.4 x 42.6mm 51 x 59mm
Depth behind 2mm panel
Note *2
22.4mm 31.8mm
incl. paper roll
47g 51.5g
Interfaces RS-232C or TTL
Data Buffer 10K bytes
Flow Control Software - XON/XOFF (Hardware flow control not supported)
Barcodes supported Code39, Code93, Code128, I2/5, UPC, EAN, KAN, JAN, CODABAR. 2D: PDF417
Power 5VDC(+/-5%), 2.5A
Standby Current 60 mA
MCBF: head 50 km
MCBF: mechanism 37,000,000 lines
Operating temperature 0 to 45°C


  1. Paper roll length is approximate, based upon readily available UK sourced coreless rolls.
  2. Depth behind panel does not account for electrical connectors for which allowance must be given. Please order a printer for physical evaluation before committing to your final panel design.