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GX****3 Approval: CSA approved JML approved MED approved Features Compact size weights only **0g Monitors combustibles, O2, CO, and H2S 0 to **0%vol methane version available Automatic backlight during alarms Calibration reminder and lock out Battery pack direct charges in the instrument or separate from unit Alarm latching or non-latching Up to **0 hours of datalogging with alarm trends Alarm silence capable Fast charge in the just *0 minutes Specifications Gas detected Combustible gas %vol methane Oxygen(O2) H2S CO Detection principle Catalytic combustion Thermal conductivity Galvanic cell Electrochemical cell Detection range ****0%LEL ****0%vol ***0.0%vol ****0ppm ****0ppm Sampling method Internal sampling pump, flow rate 0.5lpm Display Digital LCD, auto backlight during alarm Preset alarms (adjustable) 1st:0%LEL 2nd:%LEL Over:**0%LEL N/A 1st Low:*0%LEL 2nd Low：*0%LEL Over :*0% 1st:*0ppm 2nd：*0ppm TWA： *0ppm STEL ：*5ppm Over: **0ppm 1st:*5ppm 2nd：*0ppm TWA： *5ppm STEL ：**0ppm Over:**0ppm Operating temp& humidity **0℃~**0℃，below *7%RH, non-condensing Power design Ni-Cad battery: *0 hours fully charged.(Without any alarm) Alkaline battery: *4 hours(Without any alarm) Safety design Intrinsically safe Dimension & weight Approx. **1(H)�*5（W）�*9（D）mm, Approx.**0g Specifications subject to change without notice. GX****3 gas combination available Five gas Type A LEL/%Vol/O2/H2S/CO Note:CH4 version only Four gas Type B LEL/O2/H2S/CO Three gas Type C LEL/O2/H2S Three gas Type D LEL/O2/ CO Three gas Type E LEL/%Vol/O2 Note:CH4 version only Two gas Type F LEL/O2 For further details, pls contact with me, I will give you our best service.