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| 72-0290-27-J GX-2012, 5 sensor, LEL / % volume CH4 / O2 / H2S / CO with NiMH batteries and 115 VAC/12 VDC bench charger | 
| 72-0290-27-J GX-2012, 5 sensor, LEL / % volume CH4 / O2 / H2S / CO with NiMH batteries and 115 VAC/12 VDC bench charger |