RKI GX-2012 Confined Space Multi-Gas Detector with alkaline battery pack, LEL/% volume CH4/O2
RIKEN KEIKI RX-8500 PORTABLE MULTI GAS DETECTOR CH4,O2,CO,CO2 (ALL ACCESSORIES) | eBay
Four Gas Monitor, confined space detector features simultaneous detection of LEL, O2, H2S & CO. World's smallest and lightest portable multigas Detector. RKI's high quality safety instrument.