• Android Users! I found Ultimate EMP Detector, a free App on Google Play. My side of the bed with the 1990 LED Stereo clock radio is 86 microTeslas. Husband’s side with 2 chargers, Smart phone, and a LED clock is 120. The WIFI box is at 130. The highest reading in the house is right between the Smart Refrigerator and Normal Oven and aimed toward the Wifi box two rooms away at 220 microTeslas. I’m not sure what these numbers mean in terms of health on a health scale, but no where in the house is a low number! I think I found one place that was 70 and that was in a bathroom where nothing was charging.