... Mine, Pipeline, and Explosive Brief introduction BX258-LCD portable two-gas detector (hereinafter called detector) is an intrinsically safe ... 32-bit MCU; CSTN display with resolution of 128*128Ø Two level alarms (can be set) and alarming type displayedØ ... Real time clock displayØ Replaceable sensor moduleØ Self-calibration functionØ Two alarming levels in three ways (audible, visual, and vibration)Ø ...