Description:PRECISIONMILLIGAUSSMETERModel:GU-3001*Measurement:mG(milliGauss),uT(microTesla)*Range:-3,000mGto3,000mG,DC/AC -300.0uTto300.0uT,DC/AC*Resolution:1mG/0.1uT.*Sensor:Highsensitivitygausssensor.*Datahold.Record(Max,Min),RS232/USB.*1.5Vbattery(UM-4/AAA)x6PCsorDC9Vadapter.