R507 Gas Detector GDR400I5

R507 Gas Detector 0-2000 PPM 4-20mA Relay & Buzzer - Infrared sensor, for non classified area GDR400I5 - Tecnocontrol

R507 Gas Detector GDR400S5

R507 Gas Detector 0-1000 PPM 4-20mA Relay & Buzzer - Semiconductor sensor, for non classified area GDR400S5 - Tecnocontrol

R507 Gas Detector GDR403I5

R507 Gas Detector 0-2000 PPM 4-20mA Relay & Buzzer - Infrared sensor, for non classified area GDR403I5 - Tecnocontrol

R507 Gas Detector GDR403S5

R507 Gas Detector 0-1000 PPM 4-20mA Relay & Buzzer - Semiconductor sensor, for non classified area GDR403S5 - Tecnocontrol