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Detectable: City gas (10 ppm) / R-407C (30 ppm) Detection method: Automatic suction type Detection principle: Heat-line semiconductor type Depth (mm): 32 Height (mm): 130 Detecting concentration ((CH4)) (ppm): 10 Width (mm): 38 连续使用时间(H):大约12小时(2个AA碱性电池)
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190G
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