Radiation Electromotive Force Meter Portable Five Detection Indicators

How to Use:1) Press the switch of the EMF with your thumb2) Point at the EMF source and press and hold the switch (LED will flash briefly)3) The LED will indicate the EMF range for that level4) Moving or rotating the device left or right may change the reading; the highest reading is the most accurate5) Move closer to or away from the EMF source to determine the "normal" area, the green LED lights upItem Type: Magnetic Field DetectorBattery: 1 x 9V 6F22(not include)Application: Used for supernormal wave research and general EMF detectionBasic Parameters:Detection Range: 0~20+ milliGaussDetection Frequency: 50/60Hz (50 to 1000Hz- ELF), (1000 to 20,000 Hz- VLF)Accuracy: 5% (typical)Colour:grey+blackMaterial:ABSPackage Contents:1 set x Magnetic Field DetectorOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.