Measure household/office EMF in appliances computers etc.</br>Paranormal Investigations and Ghosthunters measure changes in EMF</br>Power Single 1.5V AAA alkaline battery (included)</br>Detection Range 50 - 60 Hz</br>Display 10 high visibility L.E.D.s Display Range 1.5 to 30 milliGauss</br></br>Product Description</br></br>The ElectroSensorTM is a simple accurate and affordable hand-held Gauss meter that measures Electro Magnetic Fields (EMF) with the push of a button. Weighing 2.5oz and only 4 inches long and ? inch wide this EMF detector is light and compact; it fits in your pocket toolbox or hand so you can always be prepared. The ElectroSensorTM is a value that offers fast reliable user-friendly measurements of electromagnetic pollution for an affordable price and a 1 year warranty! Its efficient accurate portable and easy to read in any light conditions with a colorful high visibility 10 LED 1.3-30milliGauss display range. It comes ready to use AAA battery included. Sample the Electromagnetic field from 50-60Hz power which most homes and businesses use?? with the precise accuracy of 3dB over full range calibration traceable to NBS standards. As man-made alternating current (AC) is different than naturally occurring EMF prolonged exposure as low as 2milliGauss may be harmful. Fortunately?? once EMF sources are identified?? you can moderate distance and exposure.