I have an Electromagnetic field detector that need a new home.
I don’t know much about this but I put a battery in it and held it next to my laptop power supply and the lights on the detector registered.
Battery not included, it takes a 9 volt PP3.
To be collected from Ruddington.
Electromagnetic field detector (Ruddington NG11)
This offer has been gifted to someone and is no longer available.