It's very unlikely any type of laser powerful enough to zap small beetles will be available for sale and use by the general public.
Or cost less than a few hundred thousand dollars after all the safety and liability costs.
Or cost less than a few hundred thousand dollars after all the safety and liability costs.
There are nonetheless lots of shady ways to buy these types of lasers without the necessary safety controls, but there also lots of shady ways to buy even more dangerous things such as landmines, dynamite, etc.
I've never seen landmines or dynamite on AliExpress.
I can't see anyone other than the manufacturer doing so. So a $10 interlock in terms of hardware cost becomes a $10 000 interlock in terms of total costs.
Equating the cost of the interlock to the quality of its performance doesn't hold up. I suspect that your experience is from automation where things like laser light curtains and lidar sensors are common (and expensive). On things like a Haas milling machine the door switch interlock is $400-$1200 (https://parts.haascnc.com/haasparts/en/USD/search?q=*:*:allC...)
So in the case of a $400 laser etcher from China being sold on Amazon, they need to spend less money on their switch than Haas does. The nice thing is that the switches for Haas need to be waterproof, etc. as they get coolant and oil sprayed on them all day. In the laser cutter it's different, so they can use a less expensive more appropriate part.
The right part for the job it seems, more expensive isn't always better (or safer).
Folks obviously can't legally sell homemade alcohol, drugs, medical equipment, etc.
>Or cost less than a few hundred thousand dollars after all the safety and liability costs.
The linked video shows a laser more than powerful enough that can be bought off ebay by anyone for < $2000
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m...
So both of your statements were wrong.
Not sure at all what you are trying to say. These are obviously real products that "Consumers" can purchase and as per the video I posted are more than powerful enough for the purpose being discussed.
They lack warranties, and critically for our discussion, have not passed inspection authorities, such as those examining laser safety of potential products.