gas detection detection systems water mist carbon dioxide alternative fire prevention halon system replacement Gas detection systems Securiplex has developed a fully addressable and integrated Fire & Gas Detection system. Intelligent flame and gas detection detectors are continuously reporting their level values to the PRO-2000 through an RS485 MODBUS communication link. Designed for the industrial sector where the need for gas and fire detection is a critical part of the day to day operation, there is a fire detection system and the other systems. The latter systems control all of the various other plant functions, from ventilation an valve operation to gas detection.