AGM Dynamation Gas Monitor The AGM series offers oxygen and combustible gas protection with the option of two additional sensors for toxic gases. A rugged metal case protects from RF interference and resists liquids and grime. AutoCal® assures the instrument will accurately self calibrate when test gas is present. Error protection prevents incorrect calibration and auto zeroing. Simultaneous display of all gases, both ceiling STEL and TWA alarms, rapid charge batteries and intrinsically safe design are all standard features. Options include remote alarm and display (RA-101B) for two person confined space entry teams and instruments for computerized data collection. Units supplied with charger. Additional accessories available.