1. Measure The Dose Rate In Real Time And Record The Accumulated Dose At The Same Time. With Calibration Function. Dose Rate Alarm Threshold And Metering Alarm Threshold Can Be Set Arbitrarily (Connection) 2. Continuously Adjustable. The Start Time Of The Current Dose Accumulation Can Be Seen. It Has A Timing Measurement Function, Which Can Be Set Arbitrarily Between 00-999 Hours. 3. It Has An Overdose Reporting Function. History Information Of The Last 10 Measurements Can Be Saved. With Calendar Clock Function, It Can Guarantee The Normal Operation Of The Clock After Shutdown. 4. Continuously Monitor The Battery Level And Battery Level Icon. The Menu Can Be Switched Freely. It Has The Function Of Prompting Sensor Failure (Display Shows "Equipment Damaged") 5. When The Recorder Is Turned On And The Screen Is Turned Off, If The Detected Radiation Dose Exceeds The Set Alarm Value, The Monitor Will Automatically Alarm. Will Automatically Jump To The Spokes. Radiation Measurements Page. Sensor:GM Counter Measuring Range:0.05USV-50mSv Measurement Accuracy:-17%-+25% based on 137Cs Y Battery Life:20 days (Continuous Measurement, No Particle Sound) Charging interface:Type-C interface (When Charging, The green Light Is Steady On, Full Off) Alarm Response Time:Less than 10s, Alarm Threshold Deviation:-17% to +25% Colour:As Shown Material:ABS Size:About 120x65x25mm Package Contents: 1 * Nuclear Radiation Detector 1 * Storage Bag 1 * Lanyard 1 * Data Cable 1 * 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.