$1,195.00 GX-2012 GAS MONITOR, 4 sensors, LEL / O2 / H2S / CO unit with Li-Ion battery pack and 115 VAC charger RKI Instruments
$520.00 GX-2003/GX-2012, 34AL cyl H2S (25 ppm)/CO/CH4/O2, dem flow reg, case & tubing RKI Instruments