... class X mall volume, light weight, convenient carrying LT-III Portable Radiation Detector Technical performance 1, Energy range: 28keV -1.3 ... , Start button back light function8, Using USB data communication and computer data transmission9, Instrument size: 80*140*37 mm10, Liquid crystal ... boot time greater than 700 hours14, Weight: 900g LT-III Portable Radiation Detector