RKI LEL (lower explosive limit) replacement sensor for the following gas monitors: GX-2003 GX-2009 Gas Watches OX-01 Single Gas Monitor GX-2012 Multi-Gas Detector [custom1] SKU; RKI01-NC-6264A Product Weight (lbs.); No Weight (lbs.); 0.5000 Brand; RKI Instruments MPN; NC-6264A UPC; No BW Sensor; No BW Parts; No Accessory; No Price; $110.00 Color; No [/custom1]