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 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 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 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.