Pulse boost module, you can work continuously,the maximum discharge distance of about 1.5MM.Dimensions: 41 * 26 * 20mm (L * W * H);Input voltage: 3V-4.2VDC;Input current: up to about 2A;No-load current: 130MA (at 4.2V);Output voltage: 2000V (battery voltage is low, the output voltage will go low). 3V voltage input when the output of about 1500V, 3.7V input about the output of about 1800V, 4.2V input when the output of about 2000V.The output circuit is doubler rectifier.With high-voltage discharge capacitor, 2000V 223 (0.022uf).Note: the board has a high voltage capacitor, the capacitor may be used after the remaining power. High pressure, the use of attention to safety.Uses: secondary science experiment, electronic equipment, anion generator, small scientific production and so on.TIP:some customers to buy after the measurement of output voltage, the general multimeter is not so high voltage range, directly with 1000V file test, the first test is not accurate, the second high voltage may cause the multimeter burn, you can use resistance partial pressure measurement, use 2 ~ 3pcs 3M resistor in series, parallel in the output, with a digital multimeter to measure one of the voltage on a resistor, three resistors in series, measure the voltage reading multiplied by 3, if the two resistors, measured voltage readings multiplied by 2. Include:1pcs