1. When the user uses the device for the first time, it may happen that the arc trigger switch is pressed and the arc fails, and the LED2 on the function panel can be observed, that is, the indicator is off. If this happens, the user It is necessary to turn off the power switch and turn it on again to release the protection state of the device until the indicator on the function panel lights up again. 2. After the indicator lights up again, the user needs to touch the discharge needle of the device, and then try to trigger the arc trigger switch again to assist the startup of the device. This process can be tried several times until the device can emit arcs normally. . 3. If the indicator suddenly turns off during use, users can try to turn off the power switch and restart the device again to restore to normal. The hand- coil is a portable and portable artificial -Pattern generating device. Its shell is hand-assembled with fully transparent acrylic sheets; it is powered by a 12.6V 2200mAh high-capacity lithium battery pack, which can produce beautiful pictures with a length of more than 13cm. The number of artificial -Pattern is as high as 1700 times, and it has a good performance in terms of effect and battery life. This product adopts the key-type single trigger mode, and does not have the function of automatic triggering and music playback. LED indicator function and status: LED1: is the power indicator. LED2: This is the device failure status indicator, when the device fails, the light is off. LED3: Circuit running light. LED4: It is a pulse light, when the trigger switch is pressed, the light is on. Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, the , the Philippines, Taiwan and so on. voltage: AC100-240V Material: Metal + acrylic colour: silver+transparent Package Contents: 1 x Handheld Coil 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.