Feature: 1. WIFI SMART CONTROL: This nuclear radiation detector is equipped with microcontrol chip and built in for Tuya WiFi module, allowing for convenient control and monitoring via for Android and for iOS devices. 2. MULTI FUNCTION: This geiger counter could automatically generate data and can store up to 10,000 sets of data, can set time, date, and sound alarms, with three main interface options, dark and light modes, the screen operation can be rotated 180 degrees. 3. HIGH SENSITIVITY: Utilizing a professional geiger counter and advanced counter tube as the core sensor, this radiation detector can accurately detect β, γ, and x rays, updating every second. 4. SOUND AND LIGHT ALARM: Whether in sleep mode or working mode, the geiger counter dosimeter will emit high volume sounds and flash the screen as an alarm when the detected radiation dose exceeds the preset threshold. 5. LOW POWER CONSUMPTION: With a built in rechargeable lithium battery, this nuclear radiation detector only requires 2 to 3 hours of charging and can continuously measure for 24 hours after automatic sleep mode activation. Specification: Item Type: Nuclear Radiation Detector Material: ABS Battery: 3.7V lithium battery x 1, battery capacity: 800mAh (built in) Application: For TUYA Sensor Type: Energy compensated G M tube Detectable Type: Hard β γ X ray Energy Range: 20kev~3.0mev≤±30% (137Cs-) Sensitivity: 80cpm/μSV/(Co-60) Resolution: 0.01μSV/h Measurement Range: 9999μSV/h Real Time Error: ≤3% Charging Duration: 1-2 hours. Package List: 1 x Nuclear Radiation Detector1 x USB Cable1 x Manual