... the failure phenomenon, small size, easy to install.7.sensor protection.Stainless steel sensor probe part, play the role of anti-corrosion ... -2,RBK-6000-6 gas alarm controller Detection range :12-15 square, combustible gas catalytic combustion sensor (% LEL), toxic gases using ... should be installed from the floor (30 ~ 60) cm and sensor site down.2.Detect gas specific gravity less than the ...