Specifications:EMF Meter Magnetic Field Detector Ghost HuntingParanormal EquipmentColor: Black,GreyMaterial: ABSAccuracy: +/- 5%Size: 14.3cm x 5.2cm x 2.5cm (L*W*H)Detection Range: 0 to 20+ milliGaussDetection Frequency: 30 - 20,000 HzBattery: 1x 9V batteries required (not included)The Five Scales:The 1st Light detects a Normal EMF field, what isalways around range is between 0 to 1.5 mGThe 2nd Light (GREEN) detects a Low Level EMF,which range is between 1.5 to 2.5 mG.The 3rd Light (YELLOW) detects a Mid Level EMFin the range between 2.5 to 10 mG.The 4th Light (ORANGE) detects a High Level EMFfield in the range between 10 to 20 mGThe 5th Light (RED) detects an Extremely High EMFRange of 20+ mGPackage Included:1 x EMF Magnetic Field Detector (Battery is not included)