Creality CV-01 PRO User Manual page 13

7. After engraving is completed, it will "beep" three times and reset. After reset
completed, it "beep" twice, enters standby mode, and the indicator light turns into
breathing light.
Note:
When engraving or cutting thin objects (such as paper), the laser may penetrate the
object and leave marks on the workbench surface. It is recommended that when using
this product, place a flat object that cannot be penetrated by the laser, such as an
aluminium alloy or stainless-steel plate on the workbench, and then place processing
material.
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