When wireless isn’t the solution

I have just received a newsletter from RS components and saw this staring back at me and thought NO this is all wrong followed by how scary is this as idea?

Wireless Limit Switch

Wireless (2.4 GHz) Limit Switches.  Now don’t get me wrong 2.4GHz license free products are great for the right application DECT phones, radio microphones and other non-critical applications BUT limit switches! With technology just because you can dosen’t always make it a good idea. I hope I never see one of these in line safety application.