Durable Material: The electromagnetic radiation detector is made of sturdy ABS plastic, which is impact-resistant and durable. Simultaneous Testing: This detector can test the electric field and magnetic field radiation simultaneously. It measures the electric and magnetic fields of the environment, making it ideal for testing microwave ovens, mobile phones, computers, etc. Easy-to-Read LCD Display: With an LCD digital display, this detector clearly displays the radiation value, making it convenient to read. The data lock function helps to lock the radiation value, making it easy to read. Sound and Light Alarm: This detector comes with a sound and light alarm function that will automatically alarm when the detection result exceeds the safe value. It provides timely reminders to protect your health. Portable and Convenient: With a compact size of 60*25*133mm and a weight of 121g, this detector is portable and easy to carry. It runs on 3.7V lithium batteries (not included), making it convenient to use anywhere. Features: Model: WT3122 Measurement objects: environmental electric and magnetic fields Dimensions: 60 x 25 x 133 mm. Weight: 121 g. Scope of application: microwave ovens, mobile phones, computers... Power supply voltage: 1-1999. Dimensions: 60 x 25 x 133 mm. Material: ABS. Color: black + red. Power supply: 3.7V lithium battery (not included). Range: electric: 1-1999 V/m; Magnetic: 0.01-19.99 T. Accuracy: Electrical: 1 V/m; Magnetic: 0.01 T. Alarm threshold: Electrical: 40 V/m; Magnetic: 0.4 T Display: 3-1/2 LCD display. Test bandwidth: 5 Hz - 3500 MHz. Sampling time: about 0.4 seconds. Test method: Dual module synchronous test Note: The data are all measured manually, please allow 1-3 cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.