User manual

EMF450-en-GB_V1.1 8/15

Introduction

ThismetersimultaneouslymeasuresanddisplaysMagneticField,ElectricField,andRFStrength.

Theunitofmeasurementandthemeasurementtypesareexpressedinunitsofelectricaland

magneticfieldstrengthandpowerdensity.ThismeterisidealforEMFmeasurementsofpower

lines,electricalappliances,industrialdevices,cellphones,base

stations,andmicrowaveleakage.

Thisdeviceisshippedfullytestedandcalibratedand,withproperuse,willprovideyearsof

reliableservice.Pleasevisitourwebsite(www.extech.com)tocheckforthelatestversionofthis

UserGuide,ProductUpdates,ProductRegistration,andCustomerSupport.

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Features

 Datahold(HOLD)

 Overloaddisplay“OL”.

 Brightnessoptions:low‐medium‐high

 SelectableAutoPoweroff(APO)Time: 1;3;5;10;15;30minutes

 KeypressSounds/AlarmSounds:On

;Off withprogrammabletoneselections

 Informationscreenshowssoftwareversion

 Languages:English,TraditionalChinese,SimplifiedChinese,Japanese,Spanish

 Magneticunitsselection：Gauss(mG)orTesla(μT)

 Electricfieldstrength:V/m

 RFStrengthUnitsselection:(μW/m²~mW/m²)(μW/cm²)(mV/m~V/m)(mA/m)(dBm).

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Low‐FrequencyEMFReadings:IndividualandaggregatedXYZaxialreadings: 

 High‐frequencyEMFReadings

 RFHistoricalRecords;upto20groups.

 Lowbatteryindication：HIGH

LOW 

 ExternalUSBPowerSupply:”

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