High sensitivity;quick response 30CM long goose neck Indicating the leakage via alarming bulb High sensitivity sensor able to detect slight gas leakage Quick find the response of leakage. Probe reset/detectability control Detection Gas: Combustible Gas Sensitivity: 50ppm Methane (Adjustable) Alarm Mode: Sound Light Alarm Sensor Type: Low Power Semiconductor Warm-up Time: 60 seconds(25,60% Rhenvironment) Response Time: 2 seconds Operation Cycle: Continual Operation Battery life:Continual use for 8 hours(a slight change base on working state) Sensor Size: 30cm Alarm limit: Lel 10% of Methane Operating Temperature: 0~50 Lower battery indication:3 +/- 0.2V Battery Type: 3 * 1.5V AAA Batteries (NOT Included) Working current:about 150mA Product size :68 x 46 x 177mm Colour: red + gray Material: plastic Package Contents: 1 x combustible gas detector (not including battery) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.