With a maintenance-free, two-year guarantee, the Shield single gas detector protects against hazardous levels of gases in even the most extreme conditions. It is equipped to display actual readings, peak exposure level, life remaining and two alarm setpoints. From ist-aim, and designed to be compact and lightweight, the Shield can be easily clipped to a pocket, belt, or hard hat. The Shield offers reliable, continuous protection at a competitive price. It features two alarm levels, one-button operation, an easy-to-read LCD, and audible and visual alarms.