Features: Designed for 18650 batteries, this module deliver 15KV output with verified parameter ensuring for generation compared to exaggerated market claims. Features strict 3V-4.5V input limits, mandatory insulation protocols, and warnings to prevent capacitor overloads while maintaining stable low temperature. Essential for researcher, and professional technicians conducting controlled experiments or creating interactive display requiring authentic electrical demonstrations. Safely power electrostatic displays, laboratory discharge tests, and equipment where15KV output and frequency adjustability are critical. Requires single cell 18650 connection or external power sources will instantly destroy this module through capacitor combustion. Specifications: Component:Plastic Input: 3V-4.5V (4.2V recommended) Input current: 1.5A-3A (varies with load) Output: 5KV-20KV Capacitance: 20KV/102/1000pF Frequency: 3-20 times/second distance: 1cm-1.5cm Size:Approx.20x48x23mm/1.89x0.79x0.91inch Package Includes: 1Pc Generator Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.