Feature:1. 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( or ).2. Audible and Visual Dual Alarm: if the tested value exceed the preset alarm value, it will produce sound and light alarm signal immediately.3. Wide Detecting Frequency Measurement Range: 20Hz-300Hz magnetic field and 20Hz-3500MHz electric field of working frequency range 0.01-199.9T(0.1-1999mG) magnetic field and 0-1999V or m electric Field of measuring range.4. User-friendly Design: soft operating buttons for the alarm value setting, MAX or AVG value switching, and units conversion, the mini pocket size EMF tester just powered by 3pcs AAA batteries, which makes it convenient for using and carrying.5. High Precision Sensitivity: reliable for measure electric and magnetic field radiation of mobile phone, hair dryer, computer, TV, printer, attendance machine, refrigerator, etc.Specification:Features: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( or ).Audible and Visual Dual Alarm: if the tested value exceed the preset alarm value, it will produce sound and light alarm signal immediately.Wide Detecting Frequency andamp Measurement Range: 20Hz-300Hz magnetic field and 20Hz-3500MHz electric field of working frequency range 0.01-199.9T(0.1-1999mG) magnetic field and 0-1999V or m electric Field of measuring range.User-friendly Design: soft operating buttons for the alarm value setting, MAX or AVG value switching, and units conversion, the mini pocket size EMF tester just powered by 3pcs AAA batteries, which makes it convenient for using and carrying.High Precision andamp Sensitivity: reliable for measure electric and magnetic field radiation of mobile phone, hair dryer, computer, TV, printer, attendance machine, refrigerator, etc.Specifications:Material: ABSMagnetic Field Strength Range: 0.01-199.9T(0.1-1999mG)Electric Field Strength Range: 0-1999V or mMagnetic Field Strength Resolution: 0.01T or 0.01mGElectric Field Strength Resolution: 1V or mMagnetic Field Strength Frequency Range: 20Hz-300HzElectric Field Strength Frequency Range: 20Hz-3500MHzTemperature Measurement Range: -10-50Temperature Resolution: 0.1Power Supply: 3 x 1.5V AAA battery (NOT included)Item Size: 130 x 50 x 27mm or 5.12 x 1.97 x 1.06inItem Weight: 85g or 2.99ozPackage Weight: 127g or 4.48ozPackage Size: 19.3 x 7.5 x 3.5cm or 7.60 x 2.95 x 1.38inPacking List:1 x EMF Tester1 x Manual (English)Package List:1 x EMF Tester1 x Manual (English)