Description of the object Introduction: Thank you for purchasing your YF-8603 Radiation Meter. Please read the following instructions carefully before using your instrument. By following the steps outlined in this manual your meter will provide years of reliable service. Warnings: 1. Never attempt to repair or modify your instrument. Dismantling your product, other than for the purpose of replacing batteries, may cause damage that will not be covered under the manufacturer's warranty. Servicing should only be provided by an authorized service center. 2. Please don't use the device in an inflammable and explode gas or powder dust environment. 3. The product has built-in rechargeable lithium battery, please do not work in high temperature environment. 4. Please dont apply the instrument in the high strength radiation field if the instrument reminding Equipment damaged 5. The detector should never be dropped or otherwise mechanically shocked, nor subjected to moisture, vibration, or dust. III: Application Areas Widely applied in the environment where existing ionize radiation, used for radiation dose supervise and protection for individuals. Such as home improvement radiation, irradiation processing enterprises, hygiene and epidemic prevention, radiation treatment, nuclear lab, nuclear station, import & export commerce inspection, building materials, petroleum chemical, geological survey, used steels and iron, Industrial ND[ and others. Operating Instructions 1. After the detector is turned on, the sensor needs to be warmed up. At this time, the detector does not measure, and starts to measure after the countdown time expires. 2. Detects Alpha, Beta, Gamma, and X radiation. It has the characteristics such as high sensitivity and accurate measurement; 2. Avg-T:The unit of the average data detection time is minute. The default value is once every minute. 4. ALAR:Alarm Limit Setting 5. ALAR-KAlarm switch Setting1 is ON0 is off. 6. The detector adopts high-performance rechargeable lithium battery. Before using the device, make sure whether the battery is charged or in low power mode, otherwise it will seriously affect the performance of the sensor. It is best to fully charge the device for detection. Specifications Voltage: 5V Charging Port: Micro USB Port Measured Rays: Detects Alpha, Beta, Gamma, X radiatio, temperature and humidity Working temperature: 0-40 Working humidity: 20%RH~80RH% Alarm responding tim: Alarm responding time td: