Features Nuclear radiation detector with LCD display, clear reading, easy to operate. The instrument uses a radioactive detector array with high detection efficiency, suitable for beta gamma x ray radiation dose rate monitoring. It has 2 kinds of detection methods, 3 kinds of alarm mode and a variety of alarm threshold. 24H real-time monitoring, and also has an English display interface, which is convenient for users to view anytime, anywhere. This product can be used in factory environment, home environment, gem testing, ore testing, etc. Features: Nuclear radiation detector with LCD display, clear reading, easy to operate. It has 2 kinds of detection methods,  3 kinds of alarm mode and a variety of alarm threshold. 24H real-time monitoring, and also has an English display interface, which is convenient for users to view anytime, anywhere. This product can be used in factory environment, home environment, gem testing, ore testing, etc. Specification: Condition: 100% Brand New Item Type: Radiation Detector Material: ABS Color: As shown in the picture Model: FS2011 Size: Approx.135x70x25mm / 5.3x2.8x1.0in Weight: Approx.200g/7.1oz Detector: Energy compensated FM tube (Geiger counter tube) Energy Range: 50KVE-1.5MEV ≤ ±30% Measurement Shows: dose rate is displayed per second, protection alarm is less than 5 seconds A Dose Equivalent Rate: 0.01~1000MSV (maximum 10MSV/H) B Cumulative Dose Equivalent: 0.01MSV~500.0MSV Quite Inherent Error: ≤ ±15% (137CS 1msv/h) A Dose Rate: 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100 MSV B Cumulative Dose Rate: 0.05, 0.5.1.0.2.0, 5.0, 10.0, 20.0, 50.0, 100MSV Operating Environment: Temperature -10 ° ~ +45 ° Relative humidity: ≤ 95% (+45 °) Power: 2 x AA battery(Not included) Voltage: 3V Rated Power: 50Hz Package List: 1 x Nuclear Radiation Detector 1 x Instruction Manual 1 x Warranty Card Package List