•Dual Testing Functions: the EMF meter can accurately detect and measure the electric field radiation and magnetic field emission at the same time. It also can measure the environment temperature(℃/℉) •Audible and Visual Dual Alarm: if the tested value exceeds the preset alarm value, it will produce sound and light alarm signal immediately •Wide Detecting Frequency & Measurement Range: 20Hz~300Hz magnetic field and 20Hz~3500MHz electric field of the working frequency range; 0.01~199.9μT(0.1~1999mG) magnetic field and 0~1999V/m electric Field of measuring range •User-friendly Design: soft operating buttons for the alarm value setting, MAX/AVG value switching, and units conversion, the mini pocket size EMF tester is just powered by 3pcs AAA batteries, which makes it convenient for using and carrying •High Precision & Sensitivity: reliable for measuring electric and magnetic field radiation of mobile phones, hairdryers, computers, TV, printer, attendance machine, refrigerator, etc. Specifications: •Material: ABS •Magnetic Field Strength Range: 0.01~199.9μT(0.1~1999mG) •Electric Field Strength Range: 0~1999V/m •Magnetic Field Strength Resolution: 0.01μT/0.01mG •Electric Field Strength Resolution: 1V/m •Magnetic Field Strength Frequency Range: 20Hz~300Hz •Electric Field Strength Frequency Range: 20Hz~3500MHz •Temperature Measurement Range: -10~50℃ •Temperature Resolution: 0.1℃ •Power Supply: 3 * 1.5V AAA battery (NOT included) •Item Size: 130 * 50 * 27mm / 5.12 * 1.97 * 1.06in •Item Weight: 85g / 2.99oz Package included: •1 x EMF Tester •1 x English User Manual