Brand: MASTECH - Model: MS6310 - Quantity: 1 - Color: Grey - Material: ABS - Power supply: 4 x AA batteries (Included) - Gas detected: Natural Gas / Methane / Ethane / Propane / Butane / Acetone / Alcohol / Ammonia / Steam / Carbon Monoxide (not to quantify) / Gasoline / Jet Fuel / Hydrogen Sulfide / Smoke / Industrial Solvents / Lacquer Thinner / Naphtha - Sensitivity: 50 ppm methane - Sensor: Solid State - Alarm: 10% ~ 40% for Methane - Warm-up: Approx. 2minute - Response time: - Duty cycle: Intermittent - Battery life: Approx.9 hours continuous - Operating temperature: 0 ~50'C - Operating humidity: 10 ~90% RH (non-condensing) - Quickly identifies and pinpoints gas leaks - One hand operation and manual regulate sensitivity to eliminate background gas level - High sensitivity - Resume calmness approx. 7~10 minutes in pure air - Gas probe about 38cm length - Packing list: - 1 x Gas detector - 4 x AA batteries (1.5V) - 1 x Chinese user manual - 1 x Bag