... gas detector shell is nonskid, waterproof, dustproof and explosion-proof.Main features: l Big OLED display, see 5 ... the chartDisplay ModeOLED screen shows density, time, battery power, Alarm state,percentage progress barData Storage5000 recordsUpload ... gas hood Application: widely used in Metallurgy, petrochemical industry, coal mine, papermaking, fire-fighting, municipal affairs, pharmacy, power ...