* Suitable for the installation in explosive gas environment with IIC class and temperature group T6
* Simple and convenient installation with plug-in structure design
* The button on the alarm button can be reset by special tool after pressing
*...
* Conversion Between manual operation mode and automatic operation mode * Installed at the entrance of the protected area * In manual state,systems will not linkage
* In automatic state,systems will linkage * Configurable with JB-QB-QTC5015 Gas...
