Features:<br> 1. Easy to read multi-segment LED display.<br> 2. The range of EMF meters for use helps measure electromagnetic fields to identify devices producing high levels of radiation, enabling users to make informed decisions about findings.<br> 3. Measures wide spectrum EMF from 30 Hz to 20,000 Hz, it can check mobile phones within 2 feet.<br> 4. Safe and convenient push-up/push-down operation. Portable, easy to use, durable, reliable, responsive. Easy to read LED light scale in dark and sunlight.<br> Five levels:<br> (1) The first light detects a normal EMF field, which is always around us. The range is between 0 and 1.5 mG<br> (2) The second light (green) detects a low-level EMF ranging from 1.5 to 2.5 mg.<br> (3) The 3rd light (yellow) detects an intermediate EMF in the range of 2.5 to 10 mG.<br> (4) The 4th lamp (orange) detects a high-level EMF field in the range of 10 to 20 mG<br> (5) The 5th light (red) detects a very high EMF range of 20+ mG<br> Specification:<br> Color: black, grey<br> Material: ABS<br> Accuracy: +/- 5%<br> Battery: 1 x 9V battery<br> Detection Range: 0 to 20+ milliGauss<br> Detection frequency: 30 - 20,000 Hz<br> Size: about 14.3cm2.9cm5.3cm/5.62*1.14*2.08in<br> Product List:<br> LED EMF Meter*1<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store