Gas to be detected: methane, oxygen, hydrogen sulfide, sulfur dioxide Protection grade: equivalent to IP66/68 (2m, 1h) Display range: (%LEL) 0-100 (methane)/(vol%) 0-40.0 (O2)/(ppm) 0-200.0 (H2S)/(ppm) 0-100.00 (SO2) 采样方法:扩散类型 气体警报:闪烁指示灯/连续调节声音/气体浓度显示闪烁/振动 故障警报:系统异常,传感器异常,电池电压下降,电池电压下降,校准故障 pantermant panter narker pan Amarter pan Smartic pan Shiperment this thisemant thisemant this pan Spanic back/buzzer Intermitt intermite intermite interment in IntermiteNt > 140