Just received, delivered right to my door - I love the service. This instrument GM3120 is the Pro quality safety device to measure Electromagnetic Field and has Alarm set points. I have find another application of this instrument: as the "bug finder". All the bug devices (hidden cameras and mics) are Wi-Fi and this instrument can pinpoint them quick. Great instrument and price - Great service, Thanks Banggood.

Just received, delivered right to my door - I love the service. This instrument GM3120 is the Pro quality safety device to measure Electromagnetic Field and has Alarm set points. I have find another application of this instrument: as the "bug finder". All the bug devices (hidden cameras and mics) are Wi-Fi and this instrument can pinpoint them quick. Great instrument and price - Great service, Thanks Banggood.

Just received, delivered right to my door - I love the service. This instrument GM3120 is the Pro quality safety device to measure Electromagnetic Field and has Alarm set points. I have find another application of this instrument: as the "bug finder". All the bug devices (hidden cameras and mics) are Wi-Fi and this instrument can pinpoint them quick. Great instrument and price - Great service, Thanks Banggood.

ElectroMagnetic Radiation Meter. Arrived within a week of ordering!! Fastest delivery from China to US I have ever experienced! Very impressed with delivery speed. The item works as described. It measures electrical and magnetic fields and displays them separately. The measurements can be displayed as peak or average and can be “frozen” with a button press. It will also alarm with either measurement going above a “safe” level. The electronics inside include microprocessor technology with an inductive and a resistive sensor. The main circuit board was assembled well with no obvious defects or cold solder joints. This means that it should be rugged, solid and able to withstand hard use. Overall, a very impressive measurement device at a reasonable cost.

ElectroMagnetic Radiation Meter. Arrived within a week of ordering!! Fastest delivery from China to US I have ever experienced! Very impressed with delivery speed. The item works as described. It measures electrical and magnetic fields and displays them separately. The measurements can be displayed as peak or average and can be “frozen” with a button press. It will also alarm with either measurement going above a “safe” level. The electronics inside include microprocessor technology with an inductive and a resistive sensor. The main circuit board was assembled well with no obvious defects or cold solder joints. This means that it should be rugged, solid and able to withstand hard use. Overall, a very impressive measurement device at a reasonable cost.

ElectroMagnetic Radiation Meter. Arrived within a week of ordering!! Fastest delivery from China to US I have ever experienced! Very impressed with delivery speed. The item works as described. It measures electrical and magnetic fields and displays them separately. The measurements can be displayed as peak or average and can be “frozen” with a button press. It will also alarm with either measurement going above a “safe” level. The electronics inside include microprocessor technology with an inductive and a resistive sensor. The main circuit board was assembled well with no obvious defects or cold solder joints. This means that it should be rugged, solid and able to withstand hard use. Overall, a very impressive measurement device at a reasonable cost.