DescriptionHigh-voltage module should be used to avoid high-voltage no-load power, power must be adjusted before the high-voltage line of the appropriate distance, high-voltage line arc distance and the battery voltage and capacity is proportional to.Features- Color: Black. - Material: Plastic and metal - Size: 6.5x2.5x2.5cm - High-voltage module should be used to avoid high-voltage no-load power, power must be adjusted before the high-voltage line of the appropriate distance, high-voltage line arc distance and the battery voltage and capacity is proportional to. - The test arc distance from the short to long experimental, power is strictly prohibited beyond the longest arc distance, because the high-pressure energy can not be released, easily damaged module. - The module power, the internal should not heat, so it can not work for a long time. - To determine whether the battery capacity can drive the maximum output power is the way to measure the arc when the battery voltage. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!