SoaringE Super Mini Thermal Printer for Arduino DIY Development Material Semi-soft fiber FR4, plastic + iron housing Compatible with kinds of controller serial port printer compatible with Arduino / Freaduino; The master control board and development board with serial port can be used; compatible with computer; It can print different size character, bar, image, convenient to use If you want to use Freaduino to drive the printer, you do not need the DC jack, you can directly use ex-power adapter and use VIN power supply for printer; Requires 2.25" wide, 50 ft or shorter thermal paper; Requires DC 5~9V @ 1.5Amp power supply during printing; Printing Speed: 50~80mm/s; Resolution: 8 dots/mm, 384 dots / line; Effective Printing Width: 48mm; Character Set: ASCII, GB2312-80 (Chinese); Print Font: ANK: 5 x 7, Chinese: 12 x 24, 24 x 24; Paper Type: Thermal paper Paper Width: 57.5 +/- 0.5mm; Paper Roll Diameter: max 39mm; Protocol: TTL Serial, 19200 baud Mean Cycles Before Failure: 5 million lines; Power Supply (Adapter): DC 5~9V; Operating Temp: 5'C~50'C; Operating Humidity: