a simple Gauss meter
Simple fact: earth natural magnetic field is between 30 and 70 u Tesla (350 to 700 m Gauss). 1 u Tesla = 10 m Gauss.
Is your home EMF hazards free? You can buy a Gauss meter to measue the accurate value. However, your smart phone can also be converted as a simple Gauss meter.
This applicaiton will sound the alarm once the abnormal EMF field is detected. The screen color will also turn from health green to danger red. So scan your home now...
keywords: Radiation, EMF Radiation level, magnetic detection, electro magnetic meter, sensor, mangetic meter, safe home.