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, γ and β 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 Detector Battery: 2 x AAA alkaline dry battery 800mAh (include battery) Detection Ray Type: γ, X and β radial Detector: Energy compensation GM tube (Geiger counter tube) Dose Equivalent Rate: 0.00-1000μSV/h (maximum 10mSv/h) Accumulated Dose Equivalent: 0.00μ5Sv-500.0mSv Language: Chinese and English, arbitrary switch Energy Range: 48keV-1.5MeV≤±30% (for 137Cs-) Relative Inherent Error: ≤±5% (137CS 1mSv/h) Sensitivity: 80CPM/μSv/h (for Co-60) Dose Rate Unit: μSv/h, μGy/h, mR/h, cps cpm arbitrary switching Alarm Mode: Sound, vibration and light. Package List: 1 x Detector2 x Battery1 x Bracket1 x User Manual1 x Storage Bag1 x Protective Cover