Natural Gas Alarm Sensor Practical Home Security Lpg Leakage Detector Features: 1. gas sensor, no passivation, it has lower power consumption and longer service life. 2. Unique design, it can sense gas, natural gas, liquefied petroleum gas. 3. Single chip intelligent control, self-detection can prevent false alarm and eliminate false alarm, stable and reliable. 4. Can be used alone. 5. Easy to install, save time and effort. No alarm within 2-3 minutes after power on. Specification: Condition: Static Power Consumption: < 2w Alarm Concentration: Liquefied Gas 0.1% - 0.5%; Natural Gas 0.1% to 1%; City Gas (H2) 0.1-0.5%; Gas Response Recovery Time: ≤30s;   Alarm Volume: ≥70dB Working Environment: Humidity ≤97%rh; Temperature 15 ℃ - + 50 ℃ Package List:  1 x Gas Detector 1 x Instruction Installation Instructions: 1. Alarm installation location: within a radius of 1.5 meters from the air source with good ventilation. (1) LPG has a higher density than air and stays at a low place after leakage. The alarm should be installed at a place about 0.3 meters away from the ground. 2. Can not install the alarm position: corner, cabinet and other difficult to circulate the air position;Easy to be smoked directly, such as lampblack position. Application: 1. Power indication: green light, power on, when the alarm goes out. 2. Alarm indicator: red light, flashing when alarm. 3. Turn on the power, the green light or flashing for 3 minutes, the alarm starts to work normally.When the combustible gas leakage is detected to reach the early-warning concentration, the alarm starts to alarm, the green light goes out, the red light flashes, and the continuous alarm sound of "drip-drip-drip" is given out.When the concentration of detected gas drops below the early-warning concentration, the alarm stops alarming. Regular Testing: 1. Every month with lighter gas into the gas hole, 5 ~ 8 seconds after the alarm should immediately sound and light alarm, indicating that the alarm works normally. 2. Please always remove dust and grease near the air inlet to prevent air holes from blocking. 3. Press the test button to simulate alarm and check whether the alarm is in good condition. Handling Methods for Alarm:  (1). Please immediately open the door and Window to ensure the flow of air, turn off the harmful air source, do not open or close any electrical switch at this time, in order to avoid the spark ignition gas combustion or explosion. (2). Immediately report to the gas management department, by professional inspection and processing. (3). After being handled by professionals, the alarm shall be ventilated.