After using the rosin atomizer pen, test the motherboard. After the motherboard is atomized, connect the power cord to quickly the short-circuit heating fault. Operation instructions: Turn on the machine and press the switch 5 times until the indicator light flashes 3 times, the same is true for shutdown. Precautions for use: During use, do not heat for more than 15 seconds, otherwise the heating will cause the glass to crack. The rosin should be put at one time, not too much. Note: Do not keep pressing the button during use. If you keep pressing for 10 to 15 seconds, the button willflash. This is a built-in protections. It's not broken.If you keep pressing this button and burning it, it will burn andatomize. Note:Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:Black Material:ABS Package Contents: 1 * Rosin Atomizing Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.