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