Feature: 1. With large clear digital display, the readings could be easily seen even if in dark or sunshine when to turn on the back light function. 2. One‑handed operation, easy to move for on‑site measurements, effectively identify the signal source and locate the signal position. 3. With data viewing, saving and output functions, it can meet the needs of various work scenarios. It can measure nuclear radiation and electromagnetic radiation. 4. The large screen displays the temperature and humidity conditions at the same time and provides more information at the same time. 5. With timing shutdown, threshold alarm function. High sensitivity, wide measuring range and long service life. The body is small and easy to operate. Specification: Item Type: Nuclear Radiation Detector Material: ABS Color: As shown in the picture Model: JD-3001 Battery Type: 3.7V lithium battery (built-in) Battery Capacity: 2000mAh Operating Temperature: 0℃~ 50℃ Operating Humidity: Relative humidity 10%RH ~ 80%RH Nuclear Radiation: Response Time: 3s Dose Rate Response: <±20% (1μSv/h~99.99mSv/h) Energy Response: <±30% (48KeV~1.3MeV) Relative Inherent Error: <±15% Electromagnetic Radiation: Unit: Electric field: V/M; magnetic field: μT Accuracy: Electric Field: 1V/M; Magnetic field: 0.01μT Alarm Threshold: Electric field: 50V/M; magnetic field: 0.3μT Measuring Range: Electric field: 1V/M ~ 1999V/M; magnetic field: 0.01μT ~ 999.99μT Application: Intelligent instrument that can measure nuclear radiation and electromagnetic radiation Applicable Scenarios: Construction engineering, industrial environment monitoring, medical environment monitoring, etc. How to Use 1. Short press the "SET" key to enter the menu page, and long press the "SET" key to exit the menu page. 2. Language setting: 4 operation pages are provided in Chinese, English, Japanese and Russian. Move the cursor bar to the desired option and press the "SET" key to confirm. Long press the "SET" key to return to the previous operation page. 3. Function switching: Move the cursor bar to the desired option, and press the "SET" key to confirm. Long press the "SET" key to return to the previous operation page. Press the "+" button to switch quickly on the main page. 4. Time setting: Move the cursor bar to the desired option, short press the "SET" key, the background turns red, and press the "+" key or "-" key to set. Long press the "SET" key to return to the previous operation page. 5. View data: Move the cursor bar to the desired option, and short press the "SET" key to view the recorded data. Long press the "SET" key to return to the previous operation page. It can store up to 7 days of data, please connect the important data to the computer through the data cable to export. 6. Timing shutdown: Move the cursor bar to the desired option, and press the "SET" key to confirm. The default shutdown is 5 minutes. The "" icon is displayed on the screen. Long press the "SET" key to return to the previous operation page. 7. Alarm value setting: move the cursor bar to the desired option, short press the "SET" key, the background turns red, press the "+" key or "-" key to set. The picture on the left shows the default alarm threshold. Long press the "SET" key to return to the previous operation page. 8. Record interval: Move the cursor bar to the desired option, short press the "SET" key, the background turns red, and press the "+" key or "-" key to set. The default logging interval is 1 second. Long press the "SET" key to return to the previous operation page. Press the "-" button on the main page to switch quickly. . Package List: 1 x Geiger Counter1 x USB Cable1 x Instruction Manual Note: 1. Before use, please read the following detailed introduction carefully, and use the instrument correctly according to the manual.2. It is forbidden to disassemble the instrument or throw it into fire.3. Prevent severe vibration and drop of the instrument.4. Do not allow liquid to flow into the inside of the instrument.