Welcome to our shop! This module is the finished module of a transformer for small scientific production. The input voltage is DC 3.7-7.4V and can output high voltage of DC 800-1000KV. According to the tesla coil principle, the module outputs high voltage pulse current, with a small volume and high efficiency. The peripheral circuit is simple, just connect the switch and install the battery, and the discharge intensity is violent. It can be used as a high voltage source for high school science experiments, electronic instruments, and anion generators. Specification: - Item Size (L*Dia.): 9.1*2.3cm / 3.58*0.90in - Input Voltage: 3.7-7.4V - Input Current: 4A - Input Cable Length: Approx. 10cm/3.94in - Output Voltage: 800-1000KV - Output Current: 0.5A - Output Cable Length: Approx. 16cm/6.30in - Discharge Distance between Two Poles: 1.5-2.5cm / 0.59-0.98in - Power Supply: 3.7V Li-ion battery, NiCd/NiMH battery pack, 4V or 6V lead-acid battery (Not included) - Weight: Approx. 65g / 2.3oz Packing list: 1 * High Voltage Pulse Generator Instruction: The module is divided into an input end and an output end. The red and green cables are the input end, with the red one being positive and the green one being negative. High voltage arcs can be generated by connecting the input end to the battery. Note: 1. Avoid powering on when there is no load. Adjust the output ends of the cable properly before powering on, and the arc distance depends on the battery voltage and capacity. 2. The arc distance should be gradually increased, do not produce the longest arc at first or the module might be easily damaged. 3. The module has high power and inner heat is not easily dissipated, so it cannot work for a long time. 4. The output voltage will be lower with a lower capacity battery. It is recommended to use a lithium battery with a capacity above 2000MA, and it is better to choose a battery above 4000MA. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.