... etc 2:catalytic,electrochemical, pid sensor 3:Explosive-proof 4:ISO9001&CE 5:4~20mA output It's a ... and JB-TB-AT2020FH.Feature:1.Adopts imported sensor with high measurement accuracy, high stability, strong ... contacts,and easily to network with Sound and Light Alarm or spot site control.7:Pipe- ... )Working voltageDC14V~35V( detector terminal)Signal transmit 4~20mA Dimension 160mm×68mm×185mm Weight 0.90 ...