NOTICE - Effective July 31, 2015, the 61-0123 LEL Sensor was discontinued by the manufacturer.
(Thermo Scientific - notice of discontinuation)
Our best recommendation for replacement is the RKI Instruments Eagle or Eagle 2
Thermo Scientific - Gastech - LEL Combustible sensor, 61-0123
For use in;
GT Series Portable Gas Detectors
Innova Series Portable Gas Detectors