R-407A refrigerant Gas Detector 0-2000 ppm 4-20mA - Infrared sensor - SMART3G-C3 Sensitron Dust Proof Enclosure Version Zone 2 category 3 areas S3023R407A

R404A Gas Detector 0-5000 ppm 4-20mA - Infrared sensor - SMART3-R for non classified area S4640R404A Sensitron

R404A Gas Detector 0-2000 ppm 4-20mA - Infrared sensor - SMART3-R for non classified area S4617R404A Sensitron

R404A Gas Detector 0-5000 ppm 12-24 Vdc - Infrared sensor - SMART3-H-FM LITE for non classified area S4690R404A Sensitron

R404A Gas Detector 0-5000 ppm 90-240 Vac - Infrared sensor - SMART3-H-FM LITE for non classified area S4670R404A Sensitron

R404A Gas Detector 0-5000 ppm - Infrared sensor - SMART3-H LITE for non classified area S3855R404A Sensitron

R404A Gas Detector 0-5000 ppm 4-20mA - Infrared sensor - SMART3-Blizzard for non classified area S5229R404A Sensitron

R404A Gas Detector 0-1000 PPM 4-20mA Relay, Display & Buzzer - Semiconductor sensor, for non classified area GDR453S9 - Tecnocontrol