Model N/A Quantity 1 Color Black Material Semi-soft fiber FR4 plastic + iron housing Features Compatible with kinds of controller serial port printer with 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 Specification 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: 10%RH~80%RH; Storage Temp: -20'C~60'C; Storage Humidity: 10%RH~90%RH Application Arduino development singlechip learning and DIY project English Manual/Spec Yes Packing List 1 x Mini thermal printer