Features:
Fine workmanship and nice performance.
Accurate and reliable; has high durability.
Operates on a single b-attery, and reports EMF measurements in five milli Gauss ranges.
Measure wide spectrum of EMFs from 50Hz up to 20,000 Hz, and it can register a cell phone that is within 2 feet.
Measure EMF level protect from potentially harmful long term overexposure to EMFs.
Help measure the electromagnetic fields to identify appliances that produce high-level emissions.
Help to keep you away from radiation, beneficial to your health.
Easy to read multi-segment Led display; easy to use.

Specifications:
Material: ABS
Color: black
Accuracy: +/- 5%
Detection range: 0 to 20+ milli gauss
Detection frequency: 30~20,000Hz
pow-er sup-ply 1 * 9V b-attery (included)
Item size: 140 * 52 * 25mm / 5.51 * 2.05 * 0.98in
Package size: 140 * 53 * 29mm / 5.51 * 2.09 * 1.14in
Package weight: 101g / 3.56ounces

The Five Scales:
The 1st Light detects a Normal EMF field, what is always around you. The range is between 0 to 1.5 mG
The 2nd Light (GREEN) detects a Low Level EMF, which range is between 1.5 to 2.5 mG.
The 3rd Light (YELLOW) detects a Mid Level EMF in the range between 2.5 to 10 mG.
The 4th Light (ORANGE) detects a High Level EMF field in the range between 10 to 20 mG.
The 5th Light (RED) detects an Extremely High EMF Range of 20+ mG.

Note:
1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.
2.Please allow a little measuring deviation due to manual measurement.