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R449A Gas Detector - Dust Proof Enclosure Version S3921R449A

R-449A refrigerant Gas Detector 0-2000 ppm 4-20mA - Infrared sensor - SMART3G-C3 Sensitron Dust Proof Enclosure Version Zone 2 category 3 areas S3921R449A

SMART3G-C3 - Détecteur de Gaz Zone 2 Cat 3 gas detector

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