Features This module is a finished transformer/booster module for small scientific productions It can output high voltage pulse current, small size and high efficiency The input voltage is DC3.7-6V DC and outputs a high voltage of 400KV DC It can be used for negative ion generators, electronic instruments and scientific experiments The peripheral circuit is simple, just connect to switch and battery, and the discharge intensity is great Features: This module is a finished transformer/booster module for small scientific productions. It can be spent High voltage pulse current, small size and high efficiency. The input voltage is DC 3.7-6V DC and outputs a high voltage of 400kV DC. It can be used for negative ion generators, electronic instruments and scientific experiments. The periphery The circuit is simple, just connect to switch and battery and discharge Intensity is great. Specifications: Input voltage: 3.7V ~ 6V DC Input current: 0.5A ~ 1A Input cable length: approx. 4 cm Red wire: input positive Yellow wire: negative input High voltage type: pulse direct current Output voltage: approx. 400 kV (caution) Output current: 0.5A ~ 1A Output cable length: approx. 5 cm Arc length: 1.5cm ~ 2cm Recommended 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, 4V or 6V Pb- Acid battery (6V can supply). better effect) Package includes: 1 x High Voltage Generator Package List