1. This product is a small high-sensitivity radiation alarm instrument, which is mainly used to monitor X-rays, -rays and hard -rays. 2. The instrument adopts energy compensation Geiger counter tube as detector, which has the characteristics of high sensitivity, strong anti-interference ability and accurate measurement. 3. A powerful microprocessor is and equipped with TFT display screen, which makes the operation easier. 4. Multi-unit display, real-time viewing of data, support for eight languages such as Chinese/Korean, and free switching. The product itself has a sound alarm mode. When it reaches the alarm threshold, it will give an alarm to remind the staff to pay attention to safety in time. The main technical indicators of the instrument meet international standards. 5. Widely used in household decoration radiation detection, radiation processing enterprises, health and epidemic prevention, radiation therapy, nuclear power plants, import and export commodity detection, building materials, petrochemical industry, geological survey, scrap steel, industrial nondestructive testing, nuclear contaminated regional items and so on. Detector: 90mm Geiger counter tube Measurement Range: 0.08 SV/h ~ 9999 SV/h Reaction Speed: 10 seconds and reaches a stable value in 2 minutes Refresh Frequency: 1 second each time Resolution: 0.01 usv/h Working Environment: -10 ~ 50; Humidity 95%RH without condensation Battery Capacity: 400mAh Charging Interface: Type-C Product Size 100x40x25mm Screen: 0.96 inch TFT color screen Colour:Black Material:ABS Attention: 1. This product contains a lithium battery. Please use a standard DC-5V power supply to charge it. 2. Do not use this product in high temperature and high humidity environments to avoid inaccurate data or circuit failure. 3. Do not use this product in ultra-high radiation environment, so as not to damage the sensor. 4. This product is not waterproof. Please avoid water droplets or use them underwater. 5. This product contains precision electronic components. Please do not pierce the needle or sharp object into the product. Package Contents: 1 x Radiation Detector 1 x Type-C cable 1 x English manual 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.