WORKING RANGE: Nuclear radiation detector, the measurement range is 0.01-50000Sv/h, suitable for radiation detection in home, industrial, and healthcare. HIGH ACCURACY: Using glass geiger counter tube, it has sensitive sensing and quick response, ensuring the accuracy of measurement results. ALARM FUNCTION: This nuclear radiation monitor supports high decibel sound and vibration alarms, and can set alarm thresholds independently. OTHER FUNCTIONS: With Chinese and English voice, 1-9999min adjustable cumulative time, auto maximum holding, fast and smooth measuring modes. PLASTIC HOUSING: The shell of the radiation detector is made of ABS engineering plastic, which has high strength, falling and wear resistance. Specification: Item Type: Radiation Dosimeter Model: GM 100H Material: ABS Power Supply Method: 1 x AA dry battery 1500mAh (built in), Type C cable direct connection power supply Ray Type: Hard rays, rays and X rays Detector Type: Glass Geiger Counter Tube Measurement Range: 0.01-500000Sv/h Measurement Accuracy: 15% Sensitivity Co (60): 2100CPM/MR/h Display Resolution: 0.01Sv/h Detector Life: 1x10? Pulse Energy Response: 50KeV-1.5MeV Voice: Chinese and English Accumulated Time: 1-9999 minutes adjustable Accumulated Dose: Automatic accumulation, can be manually reset Maximum Hold: Automatically hold the maximum value Curve Observation: Curve graph of the last hour, and automatic calculation of maximum and average values Measurement Mode: Fast and smooth modes Measurement Unit: Sv/h, mR/h, CPS, Sv Alarm Value Function: Alarm threshold can be set Alarm Method: Sound, Vibration Working Temperature: -20-60 Working Humidity: 5%-95%RH (No condensation) Battery Life: Approximately 330 hours in standby mode Package List: 1 x Radiation Dosimeter 1 x Power Supply Cord Note: Please read the manual carefully before use.