R407C Gas Detector 0-1000 PPM 4-20mA Relay, Display & Buzzer - Semiconductor sensor, for non classified area GDR453S3 - Tecnocontrol

R407C Gas Detector 0-5000 ppm 90-240 Vac - Infrared sensor - SMART3-H-FM LITE for non classified area S4671R407C Sensitron

R407C Gas Detector 0-5000 ppm 12-24 Vdc - Infrared sensor - SMART3-H-FM LITE for non classified area S4691R407C Sensitron

R407C Gas Detector 0-5000 ppm 4-20mA - Infrared sensor - SMART3-R for non classified area S4641R407C Sensitron

R-407F refrigerant Gas Detector 0-2000 ppm 4-20mA - Infrared sensor - SMART3G-C3 Sensitron Dust Proof Enclosure Version Zone 2 category 3 areas S3918R407F

R-407F refrigerant Gas Detector 0-2000 ppm 4-20mA - Infrared sensor - SMART3G-D3 Sensitron Dust Proof Enclosure Version with display Zone 2 category 3 areas S3919R407F