Features Small and Efficient: This module is a finished module of high-voltage negative ion generator. The module outputs high-voltage pulse current according to the principle of Tesla coil, with small size and high efficiency. Easy to Use: The peripheral circuit is simple (just connect the switch and install the battery), and the discharge intensity is violent. Can produce high temperature and high frequency arc, easy to ignite combustibles. Good Choice for Experiments: It can be used as a high voltage source for high school science experiments, electronic instruments, negative ion generators and small science. After the DC 3.0V-4.8V voltage is input, the DC high voltage of about 10000V (about 1-2 cm arc) can be obtained at the output end. Portable and Easy to Use: High voltage transformer generators are small, lightweight and portable. At the same time, its installation and operation process is very simple, only need to connect the switch and battery. You don't have to worry about not using it at all. Wide Range of Uses: High-voltage pulse generators can be used in atomizers, electric gun salutes, gas stoves, etc. It's very functional, easy to clean and maintain, and you'll love it. Specification: Input voltage: 3.0 -4.8V (1* 3.7v lithium battery ) Input current: 1-3A Output voltage: about 400KV (please pay attention to safety when using Output current: ≤0.5A Discharge distance between high voltage poles: 0.5-1.5cm (beyond limits) Work continuously time: within 10 seconds Attention! The input voltage will affect the output voltage and arc distance. Shape: T shape, L shape, square shape, round shape(Optional) Weight: Approx.32g~37g/1.1oz~1.3oz Wiring method: Input end: red+, yellow- Output end: 2 pcs same colors wire Package list: 1 x Pulse Generator Note:  1.Avoid high-voltage no-load power supply. (it is necessary to adjust the appropriate distance of the high-voltage cable end before energizing. The distance of the high-voltage cable to pull the arc is directly proportional to the voltage and capacity of the battery used. When measuring arc distance, the test shall be conducted from short to long. 2.Power is strictly forbidden when exceeding the maximum arc distance. As the high voltage energy cannot be released, modules are easily damaged. 3.The power is large, and it is not suitable for internal heat dissipation, so it cannot work for a long time 4.About the input power: 3.7-v lithium battery can be used in series, such as 18650 battery or Nickel-cadmium/Ni-mh battery , or 4V lead Acid batteries 5.Please strictly follow the use method and precautions to operate the module, otherwise it is easy to damage the module!  Package List