Multi-Gas Detector 4 Gas Replaceable Battery Yes Product Type Multi-Gas Detector Display Screen Type LCD Includes Probe No Housing Color Yellow Gas Detected Carbon Monoxide Hydrogen Sulfide Oxygen Communication Protocol Infrared Series Multi Gas Detector Sub-Brand Gold 100 Battery Size C Accuracy +/-0.2 Percent or 10 Percent +/-2 ppm or 5 Percent +/-5 ppm or 5 Percent Alarm Setting Adjustable Battery Life 12 hr