Lightweight, compact detector is designed with a rugged housing with concussion-proof boot for your most demanding work environments. Continuous LCD shows simultaneous gas concentrations for H2S, CO, O2, and combustibles. Features four alarm levels: instant low and high alarm for all gases, TWA and STEL for CO and H2S, and an over-limit alarm. Verify operation from a distance by looking for the Intelliflash green LED with user-defined flash frequency. Additional features include one-button operation, data/event logging, audible/visual/vibrating alarms, user-adjustable alarm set points, sensor self-test, and multilanguage capability (English, French, German, Spanish, and Portuguese).