The Sigma MOD DRV device is the basic module that is incorporated into Control Units of the Sigma Gas System. First and foremost it is designed to integrate all components and appliances of the system into an efficient and reliable Gas Safety System. The module is responsible for management of communication between various components of the system, readouts of signals from sensors and other collaborating appliances. It also provides a maintenance interface to enable operators to configure the system components (including calibration of gas detectors) with no interruption of the system operation. Indicating LEDs provided on the module enclosure are intended to display information on current status of the system operation.