Features:_x000D_ _x000D_ One instrument used for two purposes, can test both electric and magnetic field radiation stimutaneously. _x000D_ Sound and light alarm: When test result exceeds the safe value, the instrument will automatically alarm. _x000D_ Data locking: Press one button to lock the radiation value. _x000D_ Radiation assessment: To Remind you of making sure whether the radiation value is in the safe range. _x000D_ Large and clear LCD display screen for easy reading. _x000D_ Stylish design, compact size, simple operation, easy to carry and convenient for on-site measurement. _x000D_ _x000D_ Specification:_x000D_ Model: GM3120_x000D_ Material: Plastic_x000D_ Color: Shown As Picture_x000D_ Unit: V/m (Electric Field); T(Magnetic Field)_x000D_ Accuracy: Electric: 1V/m; Magnetic: 0.01T_x000D_ Range: Electric: 1-1999V/m; Magnetic: 0.01-99.99T_x000D_ Alarm Threshold: Electric: 40V/m; Magnetic: 0.4T_x000D_ Display: 3-1/2 LCD Display_x000D_ Test Bandwidth: 5Hz-3500MHz_x000D_ Sample Time: About 0.4 Seconds_x000D_ Test Mode: Dual Mode Synchronous Test_x000D_ Overrange Indication: LCD Displays "1"_x000D_ Working Temperature: 0~50C_x000D_ Relative Humidity: