Handheld EMF detect meter, mainly used to detect the electric field strength and magnetic field strength. One click lock radiation for easy movement with one hand. Suitable for the measurement of broadband electromagnetic fields from 50Hz to 20000 Hz. Equipped with 5 color indicator lights, different color representing to different radiation values. This radiation tester can be widely used in the home, office, outdoors, industrial sites, and the surrounding environment; It is also suitable for televisions, refrigerators, and notebook computers radiation detection. Features: Portable Size: This handheld electromagnetic radiation detector is portable in size and easy to carry, so you can put it in your bag and take it with you and easily grip it for use. Shockproof Housing: The housing is made of plastics material that feels comfortable in the hand, wear resistant and impact resistant, can provide long service time. High Accuracy Sensor: Built-in high-precise magnetic field electric field sensors, micro-controlled chip processor can quickly and accurately measure the value of electromagnetic radiation. Easy Operation: One click lock radiation for easy movement with one hand. Suitable for the measurement of broadband electromagnetic fields from 50Hz to 20000 Hz. LED Indicators: Equipped with 5 color indicator lights, different color representing to different radiation values, allowing for a more accurate and graphical understanding of the current environment, easy to use. Wide Applications: This radiation tester can be widely used in the home, office, outdoors, industrial sites, and the surrounding environment; It is also suitable for televisions, refrigerators, and notebook computers radiation detection. Specifications: Material: ABS Battery: 1 * 9V 6F22 battery (not included) Color: Black+Black sticker, Black+Red sticker, Red+Black sticker, Red+Red sticker (optional) Test ranges: 50Hz-20MGHz Accuracy: 5% Test frequency: 50/60Hz Working temperature: 18-49(0-120) Item size: 150 * 55 * 38mm / 5.91 * 2.17 * 1.50in Item weight: 99g / 3.50ounce Package size: 167 * 65 * 37mm / 6.57 * 2.56 * 1.97in Package weight: 100g / 3.53ounce Packing List: 1 * Radiation Detector 1 * Guideline