The PULSAR detector, Mine Safety Appliances Co.'s newest portable single-gas monitor, features a maintenance-free, 24-month service life. The PULSAR Single-Gas Detector requires no calibration adjustment and no sensor or battery replacement. The instrument detects CO, H2S, or O2, and is designed for use in petrochemical, chemical, construction, utility and other industrial environments. Features include standard spring and suspension clips, a long-life lithium battery, a numeric display with extra-large characters, a built-in gas delivery adapter, stainless steel sensors, and a triple alarm system.MSA Instrument Division.