This handheld electromagnetic radiation detector has a large, clear-definition screen with backlight display, large font and large viewing angle. It can easily cope with the dim light at night and the bright light during the day for a more comfortable experience. Support the measurement of magnetic field, electric field and temperature of the current environment. Support the electric field/magnetic field alarm value settings, with sound and light dual alarm prompt function. Features: Compact size, lightweight and portable, built-in high-accurate chip, practical and reliable to use. A large, clear-definition screen with backlight display, large font and large viewing angle, it can easily cope with the dim light at night and the bright light during the day for a more comfortable experience. The dual measurement of magnetic field/electric field can detect the magnetic field / electric field strength. Multifunctional design, it can also be used to measure the temperature of the current environment with quick response speed, and switchable. The alarm value can be set to support the electric field/magnetic field alarm value settings. Equipped with sound and light dual alarm prompt function, when the detection of the current environmental radiation reaches the set alarm value, the instrument will make sound and light for prompts. Powered by 2 * AA batteries, low power consumption, long battery lifespan, you need to prepare it by yourself. Specifications: Name: Electromagnetic Radiation Detector Material: ABS Color: black, white (optional) Battery: 2 * 1.5V AA battery (not included) Electric field strength test ranges: 1V/m-1999V/m Magnetic field strength test ranges: 0.0T-99.99T Temperature test ranges: -10 to 70 Electromagnetic radiation safety ranges: <40V/m and <0.4T Package size: 193 * 77 * 32mm / 7.60 * 3.03 * 1.26in Package weight: 200g / 7.05ounce Packing List: 1 * Electromagnetic Radiation Detector 1 * Guideline