Feature:1. MULTIPLE FUNCTIONS: Real time display of current dose rate and cumulative dose value, and there are 8 kinds of alarm thresholds for each of them, support sound, vibration and light alarm.2. DETECTABLE RANGE: Can detect nuclear radiation radioactivity, X, and ray, nuclear power plant radiation, hospital CT radiation, isotope detection, nuclear pollution detection.3. HIGH PERFORMANCE: The detector has high sensitivity and accuracy, with quick response speed, the fastest alarm speed is less than 1s, and the relative error is less than 5%.4. UNIT SWITCHING: The handheld nuclear radiation detector supports arbitrary switching of multiple dose rate units, Chinese and English switching, to meet more use needs.5. WITH 2PCS BATTERY: Equipped with 2pcs 800mAh AAA alkaline dry batteries, which is convenient to use anytime and anywhere, and suitable for long term operation.Specification:Item Type: Radiation DetectorBattery: 2 x AAA alkaline dry battery 800mAh (include battery)Detection Ray Type: , X and radialDetector: Energy compensation GM tube (Geiger counter tube)Dose Equivalent Rate: 0.00-1000SV/h (maximum 10mSv/h)Accumulated Dose Equivalent: 0.005Sv-500.0mSvLanguage: Chinese and English, arbitrary switchEnergy Range: 48keV-1.5MeV30% (for 137Cs-)Relative Inherent Error: 5% (137CS 1mSv/h)Sensitivity: 80CPM/Sv/h (for Co-60)Dose Rate Unit: Sv/h, Gy/h, mR/h, cps cpm arbitrary switchingAlarm Mode: Sound, vibration and light.Package List:1 x Detector2 x Battery1 x Bracket1 x User Manual1 x Storage Bag1 x Protective Cover