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.It also has English display interface, more convenient for users to check. 24H real-time monitoring allows users to check anytime and anywhere. This product can be used in environment, 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 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