Which is good, Henan gas controller gas controller Zhengzhou where to buy gas controller price QB2000 intelligent control system consists of alarm monitoring alarm and gas detectors, etc., can be mixed with a variety of gas detectors, easy to install distribution network, achieve 4-way, 8-way or 16-way physical measurement, display and control of public alarm. When the environment to detect the gas concentration reaches or exceeds the preset alarm value, the alarm immediately audible alarm to alert security measures as soon as possible, and drive the exhaust control system to prevent an explosion, fire, poisoning, in order to protect the safety produce. Can be used for oil exploration, extraction, oil and gas, oil refining, metallurgy, power plants, chemical, oil depots, gas stations, mines, tunnels, trenches, underground pipelines and other needs of fire, explosion, poisoning places anti-gas safety detection alarm. Product attributes: high-performance gas sensor 128 * 64 dot matrix large-screen LCD Chinese interface operating multiple gas mixture is set to install the remote display monitor gas concentrations with high sensitivity, fast response automatic drift, drift performed when the limit on compensation for each channel alarm value set independently