Gas leaks can be incredibly dangerous, even small ones. Run a quick check over your house or gas powered devices to make sure all outlets are safely sealed. Hold the power button for a few seconds and then place the detector near the suspected leak and visual/audible warnings will sound ifthe leak is bad, moderate or safe. Red (Hi), orange (Lo), and green (safe) LEDs denote the severity of the leak.
Green - Power on with short beep / safe with no alarm
Yellow - Lo alarm with short beep >2000ppm (0.2%) of methane (natural gas) detected
Red - Hi alarm with long beep >4000ppm(0.4%) of methane (natural gas detected