Description: Featuring a LCD display screen, this radioactive detector is easy to read. And there are 5 LED indicators to show different radioactive values. You can test the electric field and the magnetic field radioactive values at the same time with this radioactive tester. It can help keep you from radioactive influence and protect . It is constructed of ABS material. It is suitable for home, apartment, office, outdoor, factory, etc. Item Name: Radioactive Detector Application: 50/60Hz Frequency Monitoring Power Supply Mode: 9V 6F22 Battery (Not Included) LED Indicator: Dark Green: 0 to 1.5 Milligauss, Green: 1.5 to 2.5 Milligauss, Yellow: 2.5 to 10 Milligauss, Orange: 10 to 20 Milligauss, Red: 20 + Milligauss; Special Function: 5 LED Indicators, Each Representing Different Radioactive Values Features: LED Indicators, Portable, Accurate Monitoring Material: plastic colour: black Package Contents: 1 x Radioactive Detector 1 x English Manual Only the above package content, other products are not included. Note: Light reflection 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.