R1234yf Gas Detector Dust Proof Enclosure Version S3428R1234YF
R-1234yf refrigerant Gas Detector, HFO-1234yf Gas Detector 0-100% LEL 4-20mA - Infrared sensor - SMART3G-C3 Sensitron Dust Proof Enclosure Version Zone 2 category 3 areas S3428R1234YF Sensitron