<p>The use of broadband pass technology within device which means being more sensitive than other EMF meters in picking up electromagnetic frequency.</p> <p>There are 5 colour LED signals to different level of magnetic field. It is suitable to use either indoor or outdoor applications for measuring any electric device, power line</p> <p>Measure wide spectrum of EMF from 50 to 20,000 Hertz</p> <p>Identify potentially harmful long term overexposure to EMF</p> <p>Sensitive in detecting electromagnetic field. Simple \u0026 user friendly device. Light weight</p> <p>Specifications</p> <p>Detection range: 0 to 20+ milliGauss (mG)</p> <p>Detection frequency: 50 \/ 60 Hertz (50 to 1,000 Hz - ELF; 1,000 to 20,000 Hz - VLF)</p> <p>Accuracy: +\/-5% (Typical)</p> <p>5 LED signals for different level of magnetic field:</p> <p>Green (1) - Normal magnetic field (0 - 1.5 mG)</p> <p>Green (2) - Low level magnetic field (1.5 - 2.5 mG)</p> <p>Yellow - Mid level magnetic field (2.5 - 10 mG)</p> <p>Orange - High level magnetic field (10 - 20 mG)</p> <p>Red - Extreme high level magnetic field ( 20mG)</p> <p>Operating temperature: -18 to 49Celsius (0 to 120Fahrenheit)</p> <p>Power source: 9V battery</p> <p>Weight: 170g</p> <p>colour: black</p> <p>Material: ABS, Electronic component</p> <p>size: 14.6*5.8*25.5cm</p> <p>Package Contents:</p> <p>1* K-II Electromagnetic Flowmeter</p> <p>1* Instruction Manual</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>