Only 3 buttons, simple operation, Just press the power button to start, preheat 20 seconds countdown, you can use it directly.
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Real-time monitoring of carbon monoxide gas content. Sound and Vibration alarm and display gas concentration when carbon monoxide concentration ≥200ppm.
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Under normal machine conditions, use lit cigarette gas to aim at the sensor position, when the device has a digital display or voice and vibration alarm, it means the carbon monoxide detector is working properly.
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