[Large Color Display]: Large color screen with backlight brightness adjustment function. Clear definition with large and colorful font design, real-time display test data, it can easily cope with dim and bright environments to give you a more comfortable experience. [Multi-parameter Detection]: Electromagnetic radiation detector can simultaneously detect three parameters (high-frequency intensity, electric field intensity, magnetic field intensity), providing a comprehensive radiation detection, making it more practical. [Radiation Level Assessment]: The device has a radiation level assessment function, which can quickly detect and assess the radiation level. If the detected item exceeds the standard, the corresponding font color will turn red to remind the user. [Trend Graph Function]: Electromagnetic radiation detector with trend graph function, the user can intuitively view the trend of data changes, a better understanding of the changes in radiation levels. Name: Electromagnetic Radiation Tester Battery: 3 X AAA battery (not included) Display size: 66 X 49mm or 2.60 X 1.93in Item size: 127 X 65 X 23mm or 5.00 X 2.56 X 0.91in Item weight: 100g or 3.53ounce Parameter display ranges: Electric field strength: 0-9999.9v or m Magnetic field strength: 0-9999.99T High frequency or power density: 0-9999.99mw or Detection accuracy: Electric field strength: 0.01v or m Magnetic field strength: 0.01T High frequency or power density: 0.1mw or m Frequency ranges: Electric field strength: 20Hz-100MHz Magnetic field strength: 20Hz-1MHz High frequency or power density: 50MHz-5GHz Colour:White Material:plastic Package Contents: 1 x Radiation Detector 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.