1.3 in 1 Testing: Comes with 0.05usv-50msv wide measuring range of radioactive substances, the geiger counter can also detect temp and humidity. 2.Alarm Function: Supports easy manual setting on the threshold valve, this nuclear radiation detector is equipped with automatic alarm function. 3.Better Display: 2.8in HD digital display has low power consumption, together with the back bracket, the date viewing and reading is much easier. 4.With ABS Shell: The casing is mainly made of premium ABS material, which is durable with pressure, falling and wearing, offering good protection. 5.Flexible Using: Can be widely used in detecting domestic nuclear radiation, industrial nuclear radiation, treatment nuclear radiation and more. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.