Feature:1. [Low Power Consumption] Using 16 bit high speed embedded microprocessor as data processing unit, ultra low power consumption design effectively prolongs battery life.2. [High Efficiency] The high efficiency GM counting detector is used to monitor the dose rate of X and γ radiation, so you can use it with confidence.3. [Large LCD] Controlled by single chip microcomputer, dot matrix large screen LCD display, clear reading, easy to operate, ultra low power consumption design, unit display μSv/h, mR/h.4. [Multifunctional] Efficient GM tube detector, the sound frequency indicates the radioactive strength, and the dose rate alarm threshold can be set.5. [Alarm] Over threshold alarm, blocking alarm, battery failure alarm, can store 400 groups of historical data, scale and numbers indicate radiation strength at the same time.How to Use:Install 3 AA batteries, and adjust the measurement mode according to the instructions according to the needs (Battery Not Included)Specification:Item Type: Nuclear Radiation DetectorMaterial: ABSProduct Size: Approx. 20.5 x 10 x 3.5 cm / 8.1 x 3.9 x 1.4 inPower Supply: 3 x AA batteries or rechargeable batteries (Battery Not Included)Measuring Range: Count rate 0-500000 CPM, 0-8000 CPSDose Rate: 0.01-1000usv/h, 0.01-1000mR/hDetector: GM counter tube detectorEnergy Range: 40KeV~3MeVSensitive: ≥ 3000 CPM/mR/hInstrument Background: Counts per minute ≤ 120CPMRelative Basic Error: ≤ 15%Power Consumption: The whole current ≤ 20mATemperature Range: -15℃~50℃Humidity: Relative humidity ≤ 90% (40 ℃)γ Radiation Monitoring: It is an ideal instrume