I wouldn't worry about them harming my body, but then I'm the kind of person that will McGyver cables for my Pocket Wizards out of some Chinese remotes and diodes. The releases are pretty simple, they are made up of a 3 part blade switch. The only thing the switch does is make contact between the half press line and ground and then the trigger release to ground. No electronics, only 2 moving parts. I bought an MC-30 first and when it was time to get an intervalometer I got and off brand one and it has been working well.
Will shoot for fame...fun...food... a heck I'll shoot anytime anywhere.