It was fast shipped , and good packed , about 15 days received. The only disadvantage is that there is no electric connection diagram is included, the indications on the print are in Chinese, which is not really clear for European users. you can easily connect it incorrectly . On this moment not tested if it works , i'm sure to connect it correctly , i wait for more information .
The High Voltage source is OK; the discharging start at 8,8 -9 V DC with a current of 1.7 A; in air usually the lighting start at 3kV/1mm ... here for 12 V DC the lighting start at around 10-12 mm between the HI voltage wire and GND (the "minus" af the 12V DC source) so it can be appreciated the output voltage at 30kV ; the discharge is continuous as DC HI voltage can produce only ... i recommend the product and the seller