R454B Gas Detector - Explosion Proof Enclosure Version S4433R454B-LD
R454B Gas Detector, Opteon™ XL41 gas detector 0-100% LEL 4-20mA - Infrared sensor - SMART3G-C2-LD Sensitron Explosion Proof Enclosure with LED version Zone 1 category 2 areas S4433R454B-LD