Recent content by RxTxAu

I was intending to use EOL resistors.     I was also thinking of a series / parrallel contacts so the outside security door contact is disconnected from circuit when the inside door is closed.   I'm a retired sparky & tech so I guess I tend to use over kill.   I want to make it as fool proof &...

Security Screen Doors are the norm in Australia especially in the tropics where the mosquitos can try & carry us away, while other times they are needed to stop flies.   Our security screens are stainless steel mesh "Crim Safe" that are fitted to the outside of our doors.   The mesh is heavy &...

The magnasphere are supposed to be almost immune to being fooled using a bypass magnet but what I found interesting is the design gets away from the thin reed contact for something a lot more rugged & they are supposed to be almost immune to contact welding closed due to lightning strikes etc.  ...

Has anyone had any experience with magnasphere contacts?   Are they as good as the manufacturers hype?   Has anyone seen antitamper switches that use magnasphere?   Thanks, Brian.