... technology, can work in relatively harsh environment, and with strong anti-interference ability. It is mainly used to detect χ rays and ... power-failure, data can be stored permanently, and don’t lost.6,Low power consumption, multi-function, small size, convenient ... 662 KeV γ Radiation 1msv/h).7, Alarm response time: ≤3 seconds.8, Alarm functionDose rate threshold alarm: alarm threshold value: 0.5,1.0 ...