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Contact Person Mr. John
5F,Zhonglian Science&Technology Building,Gaofa Industrial Garden,Nanshan District, Shenzhen, China
Power supply: AC **0V; AC******0V ; DC9V battery Working frequency: **5MHz/**3MHz Alarm limit: Coal gas***0ppm(*0% tolerance); Solid petroleum***0 ppm(*0% tolerance) ; Natural gas***0ppm(*0% tolerance) Working current: Normal **0mA; Alarm**0mA Working temperature:**0 ~ *0 degree Insulation: Insulation resistance>*0ohm; Electric strength>***0V AC Relative humidity: < *0rh
