Magnetic Field Radiation Tester Computerized Electromagnetic Detectors
Green - "low" zone - low level magnetic field. 1.5 to 2.5 milliGauss. Orange - "high" zone - high magnetic field. 10 to 20 milliGauss. 1 x radiation detector 1 x English manual. 20+ milliGauss. 2.5 to 10 milliGauss.