Function: 1. Nuclear radiation,can detect X, , Ray . 2. Trend graph, Particles sound, Alarm sound, Display sound. 3. Built-in Geiger counter, which is characterized by accurate measurement and high range. 4. Measure the dose rate real-time, and record the cumulative dose at the same time. 5.The dose rate alarm threshold and dose alarm threshold can be continuously adjustable and arbitrarily set. 6.Can view the start date of the current cumulative dose. 7.Have dual alarm functions of dose rate and dose value. 8. With buzzer sound alarm function. 9.When the radiation dose rate exceeds 50mSv/h, it has a blocking warning prompt function (display 999MAX). 10.Built-in memory, the accumulated dose value, dose rate alarm threshold and dose alarm threshold data will not be lost after power off. 11.Continuous monitoring of battery power, Low battery reminder function. 12.With real-time dose rate curve display function. 13.Screen backlight ON/OFF function. 14.Particle sound ON/OFF function. 15.The external Type-C interface can be used for power supply. Parameter Material: ABS Color: Yellow Detectable species: Beta, Gamma, X-ray Sensor type: G-M tube Energy range: 48kev-1.5mev less than 30% Relative intrinsic error: less than plus or minus 10% Sensitivity: 80cpm / SV / Co-60 Measuring range: 0.1Sv/h~50mSv/h The maximum dose equivalent rate: 10mSv/h Voice source: real particle sound / alarm sound /mute Alarm threshold: 0.5 (Adjustable) The use of ambient temperature: -10 ~+45 Relative humidity: less than 95% Power supply: 3.7V 1800mAh battery Item size: 127 * 65 * 27mm Item weight: 145g / 5.1ounce Package size: 160* 60 * 25mm Package weight: 160g