Single Gas DetectorDirect, real-time readings on large LCDOperates through consecutive shifts—exceptional battery run-timeSecure and accurate history with datalogging optionSimple automatic calibration procedure; compatible with BW MicroDock II automatic test and calibration stationFull function self-test of sensor, battery status, circuit integrity and audible/visual alarms on start upBright wide-angled visual alarm barsBuilt-in concussion-proof bootWater-resistant