RKI Instruments 72-0290-24-__ GX-2012, 4 sensor, LEL / % volume CH4 / O2 / H2S base, choose battery option BATTERY OPTION (See Description):D which employs a unique hypoallergenic arc flash winter jacket

RKI Instruments 72 0290 24 __ GX 2012, 4 sensor, LEL % volume CH4 O2 H2S base, choose battery option BATTERY OPTION (See Description):D which employs a unique hypoallergenic arc flash winter jacket which employs a unique hypoallergenic compound The level dependent digital audio circuit senses noise levels above the desired threshold and compresses them to a safe decibel level or amplifies weak sounds to an audible level F Li Ion battery pack only with 100 240 VAC 12 VDC Charger (Alkaline battery pack not included)… ……………………… $196 E Alkaline and Li Ion battery packs with 12 VDC Charger… …………………………………………………………………… $229