REED GU-3001 Electromagnetic Field (EMF) Meter, milliGauss (mG)/ microTesla(µT)


This Electromagnetic Field (EMF) Meter measures both AC and DC magnetic field in milliGauss and microTesla with a uniaxial Hall effect sensor. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.


  • Measures AC and DC magnetic fields milliGauss (mG) or microTesla (µT)
  • N pole / S pole indicator
  • Data hold and Max/Min functions
  • Zero adjustment button for relative measurements
  • Large, easy-to-read LCD display
  • Optional PC software features live tracking via USB connection
  • Tripod mount for long-term monitoring
  • Low battery indicator and auto shut off


Measuring Ranges-3000 to 3000mG, -300 to 300µT
Frequency ResponseAC/DC: 40Hz to 10KHz
Sensor TypeUniaxial magnetic probe
Accuracy±(2% + 2mG)
Resolution-199.9 to 199.9mG: 0.1mG
≥200 or ≤-200mG: 1mG
-19.9 to 19.9µT: 0.01µT
≥20 or ≤-20µT: 0.1µT
General Specifications
Display4-Digit LCD Display
Data HoldYes
Sampling TimeApprox. 1 sec
Auto Shut-offYes (after 10 mins/off)
Kick StandYes
Tripod MountableYes
Low Battery IndicatorYes
Power Supply6 AAA Batteries or AC Adapter (optional)
PC ConnectivityUSB Cable (optional)
Software  SW-U801-WIN Software (optional)
Software OS CompatibilityWindows XP / Vista / 7
Operating Temperature32 to 122°F (0 to 50°C)
Storage Temperature14 to 140°F (-10 to 60°C)
Operating Humidity Range10-80%
DimensionsMeter: 6.8 x 2.7 x 1.7" (173 x 68 x 42mm)
Probe: 7 x 1.1 x 0.7" (177 x 29 x 17mm)
WeightMeter: 12.3oz (350g)
Probe: 2.8oz (78g)