<p>1. Built-in J305 high-sensitivity Geiger tube</p> <p>2. Adopt ARM processor, fast computing speed</p> <p>3. Real-time dose rate, average dose rate, cumulative dose rate, trend chart and other functions</p> <p>4. Only sound and light dual indication function, when incident particles or rays are detected, the buzzer and indicator light prompt</p> <p>Summary:</p> <p>This product uses J305 Geiger tube, which has high detection sensitivity and can detect x-rays, gamma rays, and beta rays. It can detect radioactive doses of marble, antiques, jade, iodine 131, and unknown minerals used for decoration.</p> <p>Parameters:</p> <p>Real-time dose: 0-999.9usv\/h</p> <p>Cumulative dose: 0-9999sv\/h</p> <p>Life: \u226510\u2079 pulse number</p> <p>Operating temperature range: -40\u2103-+55\u2103</p> <p>Size: 170x41x26mm</p> <p>Power supply interface: TYPE-C</p> <p>Working voltage: 5V (current needs to be 100mA)</p> <p>Screen: OLED (resolution: 128x64)</p> <p>Colour:Transparent</p> <p>Material:ABS</p> <p>Note: This product does not have a built-in battery, you need to use a TYPE-C charger to power it</p> <p>Package Contents:</p> <p>1 x Nuclear Radiation Detector</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>