Parts List: 1Electromagnetic Radiation Detector Highlight description: [Safe Identify High EMF Radiation] This electromagnetic radiation detector is mainly used for safely identify potentially harmful high EMF radiation, help you know about your environment. [9-LED Indicator Light] The 9-LED indicator represent different radiation values. Green indicator light indicates the normal area and the low area, yellow indicator light indicates the caution area, orange indicator light indicates the high area, and red indicator light indicates the warning area. [Battery Operated] This EMF reader is operated by 1 9V battery (not included), high efficient and save power. The small size is convenient to use and easy to hold. The 9-LED light helps you read test results in the dark and sunlight. [Scope of Application] This product can detect high, medium and low frequency electromagnetic radiation, magnetic field strength and sensitivity. It can be used for home, computers, TVs, hair dryers, vacuum cleaners and other electrical appliances. Detailed description: Product Name: Electromagnetic Radiation Detector Material: ABS Size: 194.52.7cm Power supply: 19V battery (not included) Color: Black Notes: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement.