[Professional Radiation Detection] Equipped with professional Geiger counter and advanced G M tube as the core sensor, this detector accurately detects , , and x rays, providing real time updates every second. [Reliable Alarm System] It's a portable radiation detector that can measure radioactivity efficiently and effectively. When the radiation dose exceeds the alarm threshold, the Geiger counter emits a loud sound and the screen flashes, ensuring comprehensive care for and the well being of your family. [Long Battery Life] With a powerful rechargeable lithium battery, this portable radiation detector only requires 2 to 3 hours of charging and can continuously measure for 24 hours, providing convenience and reliability. [Compact and Portable] Its compact size makes it easy to carry, and its user-friendly interface makes it easy to use even for those with no prior experience. This radiation dosimeter is small and convenient, allowing you to carry it wherever you need to perform radiation detection, ensuring your safety. [Wide Range of Applications] This real-time monitoring device provides instant readings, meaning you can react promptly. Suitable for use in home renovations, radiation production enterprises, nuclear laboratories, nuclear power plants, construction materials, petrochemicals, geological surveys, and more. Spec: Item Type: Nuclear Radiation Detector Battery: 1 x Polymer Battery, Battery Capacity: 500mAh (Built in) Detection Counter: 48mm Geiger Counter Tube Measurement Range: 0.08Sv/h to 9999Sv/h Response Speed: Responds Within 10 Seconds, Stable Value Reached in 1 Minute Refresh Rate: 1 Time Per Second Operating Environment: -10 to 50 Humidity: 95%RH No Condensation Detectable Radiation Types: Ray, , Ray Applicable: Home, Hospital, Nuclear Power Plant, Laboratory, Processing Enterprise, Metallurgy Material: plastic colour: A-Black Package Contents: 1 x Geiger counter 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.