Features:<br> 11. High-quality material: Made of high-quality ABS material, durable, ergonomic, beautiful and comfortable to hold. 22. Precise measurement: The detector is ideal for measuring electromagnetic field radiation levels around power lines, household appliances and industrial equipment, accurate and safe to use, portable and stable. 33. Simple operation: Simple operation, high sensitivity, 50Hz-500MHz frequency range, suitable for the measurement effect of most radiation products, demonstrating personal understanding of radiation. 44. Wide range of applications: Radiation testers are widely used in electrical equipment, electromagnetic radiation measurement, telephones, computers, TV copiers, fax machines, air conditioners, refrigerators, etc. 55. <br>Material: plastic shell metal electronic core<br>Size: 1482025mm<br>Power supply: 1.5V (AAA) 2 (not included)<br>Frequency: 50~500Hz<br>Test ambient temperature: 32~122F (0-50C)<br>Package Included:<br>1* Electromagnetic radiation test pen