Hydrogen Gas Detector 0-100% LFL 4-20mA - Catalytic sensor - SMART3G-D2 Sensitron Explosion Proof Enclosure Version with display Zone 1 category 2 areas S2157H2

Hydrogen Gas Detector 0-100% LFL 4-20mA - Catalytic sensor - SMART3G-C2-LD Sensitron Explosion Proof Enclosure with LED version Zone 1 category 2 areas S2155H2-LD

Hydrogen Gas Detector 0-100% LFL 4-20mA - Catalytic sensor - SMART3G-C2 Sensitron Explosion Proof Enclosure version Zone 1 category 2 areas S2097H2

Hydrogen Gas Detector, H2 Gas Detector, 0-3000 ppm 4-20mA - Electrochemical cell - SMART3G-C3 Sensitron Dust Proof Enclosure Version Zone 2 category 3 areas S4546H2