Custom triggering boxes, designed by Machine Shop Special Effects, fabricated by me.
These allowed the company's existing radio control system to control higher power devices. It was essential that the electronics were incredibly reliable, as any false triggering of pyrotechnic devices could potentially result in injury, death or exploding puppies.
Typically be used for confetti/glitter cannons, prop drops, pyrotechnics or any other remotely controlled devices, usually for large events and theatrical productions.