The iTX multi-gas monitor from Industrial Scientific Corp. is a toxic and combustible sensor configuration capable of simultaneously detecting oxygen and the five gases associated with methamphetamine production. The iTX has proven to be an effective tool for protecting law enforcement personnel from such dangerous chemicals and by-product gases of methamphetamine production. The iTX can be transformed from a single gas go/no go monitor to a six-gas datalogging instrument, or anything in between. The multi-gas monitor features a rugged, 24-gauge stainless steel housing, which provides robust protection from rough environments and radio frequency interference and weighs only 18 1/2 ounces. Standard datalogging, data storage and site/user ID data entry capabilities automate tedious record-keeping details. Additional features include a backlit dot matrix LCD that simultaneously displays all gases monitored, ultra-bright visual alarms and a powerful 90 dB audible alarm