FY8812 electromagnetic radiation detector is a portable handheld EMF testing device for measuring electromagnetic radiation generated by household appliances, power lines and electronic equipment. It adopts high-sensitivity induction probe to capture low-frequency magnetic field and electric field data accurately, with clear digital LCD screen displaying real-time radiation values and risk level reminder. Simple one-button operation supports unit switching and data hold function for stable reading recording. Built-in audible and visual alarm triggers automatically when radiation exceeds safe threshold to remind users of potential hazards. Lightweight anti-drop ABS body is easy to carry for home inspection, office testing and real estate evaluation. Wide test range covers daily electronic devices like mobile phones, computers, refrigerators and power adapters. Compact design requires no complex calibration, friendly for families, decorators and safety inspectors. Stable detection performance and affordable factory price make it a popular safety measuring tool for global hardware and daily goods suppliers.