Detect Various Flammable Gases: Portable Natural gas sniffer and testeris used to locate exact gas leak for various combustible gas, such asmethane, natural gas, propane, LPG, sewer gas, coal gas, gasoline, otherflammable gasesDetection Range: Approximately 50 to 10,000 ppm (Based on Methane), instant response once encounter leakage pointsEasy-to-Use Gas Leak Detector: Powered by 3 AAA batteries (Notincluded), 12 inch bendable gooseneck can locate and detect the gasleaks even in hard-to-reach areas at home & VR, kitchen andfireplace etc., refer to How and Where to Use the Y201 Combustible GasDetector videoSound and Visual Gas Alarm: Six red LEDs (visual) and 85dB audiblealerts once encounter gas leakage along pipeline or around the suspectedleakage pointsOriginal Design and Lifetime Technical Support: Design patent andcertifications are applied to make sure the product quality anduniqueness. How to use?1Warm up process: around 10sThe speaker will always have di didi until we turn offdevice, except one moment in step 2.2. At warm up period, ticking noisefrequency is slow: around 2~3 times/s.The knob is used to adjust sensitivity of detector afterfinish 10s warm up process, during the process, no matter how to adjustthe knob, the device won't have any reactions.2Rotate the knob to adjust sensitivityIf the alarm sounds prematurely and LED lights are on afterwarm up, need to decrease sensitivity to prevent false alarm (dialdownward "-", shown as red arrow) .Rotate the knob to adjust sensitivity until the first bottomLED turn off or at the threshold of lighting up, and the moment thatticking sound stops. This is the best status.But if it's inconvenient to get the best status, we can justmake the first bottom LED be on and have slow ticking "di di...."sound. Because once encounter leakage, all the rest 4~5 LED will betriggered on together at just one moment.3Ready to sniff or trace leakageMove the probe along pipeline or around the suspectedleakage points, such as fittings, connectors and switches, onceencounter gas leakage, all 5~6 LED lights will be triggered immediatelyand the low frequency (2~3 times/s) ticking will change into piercingsounds (frequency 6~7 times/s, too fast and human ears cannotdistinguish one time by one time) .