This product is a small high-voltage module with small cantacts-clamps at the input for power supply, which is convenient, at the output there are two elongated contacts that depart from a small transformer. The whole structure is very small and designed to ignite something, thanks to the high-frequency electric arc, which is formed between the contacts at the output of the module. This module can be used in the manufacture of electronic lighters for the home, by the way, many people order it for this. I think this electronic lighter will be very convenient to use in robotics, I think you know that there are robot battles in which flamethrowers are very often used, it was in such robots that this module was convenient to use. But these are not all projects where you could use it, it all depends on your imagination and knowledge.
The module costs a little, only 143 rubles, delivery is paid and costs around 40 rubles, this is of course not much but the price slightly increases. Reviews are not bad with a rather small number of orders for Aliexpress.
The operating voltage from which this module can operate is 3-5 volts and the maximum current that it can withstand is 3 amperes. It also has a built-in power button, which is convenient.
In general, not a cool module for replenishing your supplies for projects.
Well, thank you all for your attention and good luck in future projects, friends!
Cost: ~ 143