This is a voltage multiplier kit genrally used in flying insect killers when connected to killer grid in flying insect killers high voltage current electricutes the arrested insect AT Voltage input 110V AC OUTOUT is 500volt DC ( low current ) approximately AT Voltage input 220v ac OUTPUT is 1000V DC ( low current ) approximately pcb size 40x70 mm wire length 5oo mm on both sides Circuit can be used to various other very low current application of 500v dc or 1000v dc depending upon input voltage The circuit is tested and tried on many types o flying insect killers how ever any other application is not confirmed as yet IT IS ASSUMED THAT BUYER OF THIS PRODUCT HAS BASIC ELECTRONICS AND ELECTRICAL KNOWLEDGE OF USING THIS TYPE OF HIGH VOLTAGE EQUIPMENT/pcb/diy circuits etc CAUTION and disclaimer Please handle the pcb board very carefully as the high voltage output is can be lethal killer and dangerous to human being too so handle the circuit board very carefullySeller assumes no responsibility express or implied of any type/loss/injury / electric shock or any other loss to user please note capacitors remain full charged even when circuit is disconnected from ac mains.always handle this pcb board very very carefully.