... % F.S. Alarm method: light, sound and vibration Features1. Test gas in the office, workshop, train, bus, mine, mountain, vessel cabinet ... .S.Alarm method: light, sound and vibrationWorking Temperature: -40°C ~ 70°C, 0-95%RHTest Method: pump inhalePower: 1800mA rechargeable battery, 3 ... -100ppm0-2000ppmResolution0.001ppm0.01ppm0.1ppmResponse Time: 30S max40S maxOthers available gas: All