How to print selftest? First of all ,please press the power and feed butoon together. The error light turns into red,then release it!
There will be printing selftest.
About this product
58mm portable thermal printer
●2500mah 18650 battery,Charger: 5V/1A
●90 mm / s ultra high print speed
●Support 1D+2D bar code printing
●TPC USB charging and data transmission
●support 50MM large diameter rolls
●support GB18030 big font
●support multi language print