一、RAD-1750 radon sensor is a radon detector developed and designed by CESTSEN According to GB50325-2020 "Indoor Environmental Pollution Control Standard for Civil Building Engineering", it adopts the photoelectric transistor sensor technology imported from Europe, which has high sensitivity and consistency and has been calibrated. Simple and easy to use, it is suitable for long-term online measurement and early warning in various fields such as buildings, indoor air quality, scientific research and underground exploration.