Features Smart EMF Tester --- This EMF detector can be used to measure the electromagnetic field to identify the equipment generating high radiation. Practical Detector --- Multifunctional electromagnetic radiation detector, supporting electric field radiation detection and magnetic field radiation detection. With High Accuracy --- Built in high electromagnetic radiation sensor, microcontroller chip processor can quickly and accurately measure electromagnetic radiation value, ensuring accurate and fast measurement. Clear Display --- Clear backlight large screen, exceeding the alarm threshold, with two alarm methods of sound and screen value, making the large screen clearer and easier to understand. Easy Operation --- There are two units of mG and μT for the measured magnetic field radiance, and you can switch according to your needs. Specification: Item Type: EMF Meter Model: K7 Magnetic Field Frequency Response Range: 5HZ-300HZ Magnetic Field Range: 0.1-199.9 MG Resolution: 0.1MG Alarm Threshold: >4.0 MG Accuracy: ± 15% Magnetic Field Range: 0.01-19.99μT Resolution: 0.01μT Alarm Threshold: >0.4μT Accuracy: ± 15% Electric Field Strength: 1-1999 V/M Resolution: 1V/M Alarm Threshold:>40 V/M Accuracy: ± 15% Temperature Range: 10-50 ℃, with ±2℃ accuracy. Working Temperature and Humidity: 0-40℃, that is, 32-104℉, 45%-80%RH. Storage Temperature and Humidity: -20-60℃, that is, -4-140℉, 45%-80% RH. Power Supply: 3 x 1.5V AAA, batteries are not included. Material: ABS Package List:1 x EMF Meter 1 x User Manual Package List 1 x EMF Meter 1 x User Manual