QTC406 gas leak detector is a smart detector developed by our company that can output 4-20mA current signal and RS485 signal at the same time and display it in real time. The product has the characteristics of high stability, high accuracy and high intelligence. It is suitable for places where flammable gas exists and displays the concentration value of flammable gas in real time. When the concentration of the on-site combustible gas exceeds the set alarm value, the detector outputs a switch signal, which can be linked to external equipment: such as sound and light alarm, open exhaust, close valve, etc.