Electromagnetic Field Meter 20/200/2000 milla Gauss - 2/20/200 micro Tesla Accuracy +/-3 Percent Frequency Range (Hz) 30 to 2000 Data Hold Data Memory and Read Functions Displays Micro Tesla and Milli Gauss Min/Max Hold Triple LCD Display Monitors Magnetic Field Radiation Levels Around Power Lines Appliances and Industrial Devices LCD Display Includes 6 AAA Batteries Cable Software CD