The product supports four gas detection: EX, O2, H2S, CO. Detection gas types: EX, H2S, CO, O2. H2S (0-100)ppm 10ppm 35ppm 1ppm. 1 X Gas Detector. Four alarm modes (sound, light, vibration, display) are not easy to ignore, high safety, high and low alarm values can be set.
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