Gas Clip MGC-P Multi- With Pellistor Sensor, Carbon Monoxide, Hydrogen Sulfide, LEL, Oxygen Gas, 0 to 100 ppm Hydrogen Sulfide, 0 to 500 ppm Carbon Monoxide, 0 to 100% LEL, 0 to 30% Oxygen Detection, Audible/Vibration/Visual Alarm, Lithium-Ion Battery