Product description: Contents: 1 radiation detector. Dimensions: 132 x 69 x 29mm Weight: 190 g. Reading display: three and a half liquid crystal display, large screen 1999. Test bandwidth: 50 Hz-2000 MHz. Sample time: approximately 0.4 seconds. Operating voltage: 9 V. Battery model: 6F22 9 V. Suitable for the crowd: pregnant women's health assistants, avoid fetal irradiation, healthy growth of adolescents and children, avoid scientific irradiation, practitioners are more dangerous, avoid long-term irradiation, parents are old and have low resistance, you should stay away from electromagnetic radiation. Electromagnetic radiation detector: it is easy to use, easy to carry, and can measure quickly the intensity of electromagnetic radiation around the device. The test frequency band is wide and can be divided into high frequency and low frequency measurements. The test is accurate and the lowest frequency for measuring electromagnetic radiation can reach 50 Hz. Low frequency electromagnetic radiation: all sources of electromagnetic radiation within the equipment test specification, such as such as computers, televisions, photocopiers, fax machines, air conditioners, refrigerators, audio systems, washing machines, power supplies, etc. Radio frequency electromagnetic radiation: All sources of electromagnetic radiation in the device are tested for technical indicators such as wireless routers, cell phones, TV signal towers, and broadcast signal towers. Environmental electromagnetic radiation: all sources of electromagnetic radiation in technical indicators equipment rooms, offices, computer rooms, control rooms, cables, power lines, monitors, transmitters and other equipment.