Combustible Gas Detector Sound Light Vibration Alarm Oxygen Hydrogen Sulfide Carbon Monoxide Tester Item Type: Combustible Gas Detector Material: ABS Color Screen Upgrade: 2.3 inch HD color screen, multi interface display, all data at a glance Gas Detection and Measuring Range: Combustible Gas: 0 to 100% LEL Oxygen: 0 to 30% VOL Hydrogen Sulfide: 0 to 100 μ mol/mol Carbon Monoxide: 0 to 1000 μ mol/mol Resolution: 0.1 (combustible gas, hydrogen sulfide, oxygen), 1 (carbon monoxide) Measurement Accuracy: ≤± 5% FS Response Time (90%): 30S Storage Environment: Temperature: - 10 to 55 ℃ Humidity: Less than 85% RH Working Environment: Temperature: - 20 to 50 ℃ Humidity: Less than 95% RH without condensation Battery: 1 x 103450 1800mAh polymer lithium battery (shipped with built in battery) Standby Time: More than 8 hours of continuous operation Backlit Color Display: Yes Chinese English Bilingual Choice: Support Sound, Light, Vibration Alarm: Support Data Storage: 120000 Power Supply Mode: USB direct charging Sensor Calibration: Support