House Materials: ABS Accuracy; +/-3% F.S. Alarm method: light, sound and vibration Features1. Test gas in ... workshop, train, bus, mine, mountain, vessel cabinet ect.2. With backlight, alarm with light vibration and sound. 3. 1800mA rechargeable battery. 4. High ... grade: IP65 Specifications: House Materials: ABSAccuracy: +-3% F.S.Alarm method: light, sound and vibrationWorking Temperature: -40°C ~ 70° ...