(TGS2600—general air contaminants, hydrogen, and carbon monoxide; TGS2602—ammonia, hydrogen sulfide, high sensitivity to VOC, and odorous gases; TGS2603—odors generated from spoiled foods; TGS2610—LP gas and butane; TGS2611—natural gas and methane; TGS2612—methane, propane, and butane; ...