2.8" TFT LCD Nuclear Radiation Detector Geiger counter marble detector tester

Description

there are three Nature rays: α (alpha), β (beta), γ (gamma) rays. There are two ways to accept human radiation called brachytherapy and external beam radiotherapy. α, β, γ three rays because of their different nature, its ability to penetrate material and ionizing ability is different, their different manner harmful to the human body. α particles only enter the body will cause internal damage, which is irradiation; γ-rays, mainly from outside the body causing damage to the human body, which is external radiation; β-ray irradiation caused both, and cause external exposure.
Radiation hazards:
People in long-term practice and application found that a small amount of radiation exposure does not endanger human health, excess radioactive radiation on the human body will produce harm, make people sick, cancer, death. The longer the exposure time by the radiation dose by the greater harm is greater.
Features
:
Measuring radiation types: α (alpha), β (beta), γ (gamma) ray
Sensor Type: GM
Energy range 50kev-1.5mev <+ -30%
Radiation count rate：25/min
Error: <10%
Sensitivity: 80cpm / usv /(Co-60)
Units of measurement: suv / h msv.
The maximum dose equivalent rate: 99.99 usv / h
Sound source selection: real particle sound / alarm sound / mute
Select alarm threshold: 0.5 / 1.0 / 2.0 / 5.0
Power: 3v * 0.05A, about 0.15w
Display: 2.8 "TFT, color
Power: 2X AA / USB, can not charge for battery
size: 135 * 70 * 38mm
Weight: 180g (without battery)
Real-time value: 0.09-1000usv / h
Cumulative value: 0.00-99.99msv
Note : not included any cable, power, battery