Typical forum answer and attitude. Last time I was on a security forum (10 years ago) it was full of people on their high horses, with accreditation coming out of their orifices: "You know nuffin about security - go get yer self a professional blah! Blah! Blah!" Nothing has changed sadly. I thought this was a diy forum for people who aren't professionals and like to do D-I-Y! As such, you wouldn't expect professional results from everyone, otherwise no-one would be on this forum, we will all be on installer only forums talking about how many orders we've taken last month
For me, an amateur, I also have a job, but it ain't in security and I ain't botherd if its to Fort Knox regulation or if it suits Mr. Expert. It's also to check if the positioning for me is ok before any screws come into contact with the uPVC. The shocks are only to trigger the exterior lighting in the same way as a regular security lighting would behave. It's not critical to "my" application, and I don't care if the lighting switches on due to some "rattle", but the door sensor part of the unit will set off an alarm if opened. This is the part that I care about. And it will also be backed up by PIRs. I don't live near Heathrow, a train track or a main road, and the sensitivity is perfect and only sets off when deliberately banging on the window or frame. If it works, then what harm will be done other than a light turning on falsely? If it doesn't work, then the shocks aren't for me and I will switch off the shock input altogether. But they do work for me, and I will leave it as is, so what's the problem (better put my hard hat on)?