Features:This module is a finished module of transformer/booster for small scientific production.It can outputhigh voltage pulse current, small size and high efficiency.The input voltage is DC3.7-6V DC and will output 400KV DC high voltage.It can be used for negative-ion generator, electronic instrument, and science experiment.The peripheral circuit is simple, simply connect to switch and battery, and the discharge intensity is great.Specifications:Input Voltage: 3.7V~6V DCInput Current: 0.5A~1AInput Wire Length: About 4cmRed Wire: Input positiveYellow Wire: Input negativeHigh Voltage Type: Pulse direct currentOutput Voltage: About 400KV(be careful)Output Current: 0.5A~1AOutput Wire Length: About 5cmElectric Arc Length: 1.5cm~2cmRecommended Power Supply(not included): Single 3.7V lithium battery or two 18650 batteries, phone battery(>2000mAh, protection board should be removed), NiCd/Ni-MH battery pack, 4V or 6V Pb-acid battery(6V can provide better effect)Note: 1, Output ends of cable should be adjusted properly before power on, and the arc distance depends on battery voltage and capacity. 2, The arc distance should be from short to long, do not produce a longest arc at first or the module might be damaged easily. 3, The module has high power and inner heat is not easily dissipated, so it can not work for long time.4, The way to judge if a battery capacity is enough to output maximum power is to measure the battery voltage when producing arc. It the measured voltage is about 6V, then it can output maximum power.Package Includes:1 x High Voltage Generator