Industry gas leakage detector combustible gas security alarm explosion proof

Gas detector HD-T600 is used to continuously monitor the density of combustible gases in the air for a long time, and is installed in flammable and explosive places where the working environment is bad and the staff are not easy to get close to.
The concentration is converted to DC4-20mA standard signal output. The gas detector is with LCD density displayer and sound and light on-site alarm. But it should be connected to fire alarm control panel or other types controller for alarm report and surveillance. https://www.vedardsecurity.com/combustible-gas-detector-explosion-proof-ex-d-iic-t6-p-26