The GST303 and GST306 addressable gas extinguishing control panel is packed with unique features that you have come to expect from a GST product that have enabled us to become world recognized as a leading manufacturer in the fire detection industry. The system provides up to 6 extinguish zones, connected directly on the addressable loop Auxiliary, the FACP that are able to control associated fire suppressant equipment to achieve automatic or manual control of gas release. It can also control gas release devices independent of the FACP. When the FACP is not working properly, it can still control extinguishing devices through emergency gas override control in field or Start and Stop keys on the control panel. This control panel can check the circuit and alarm when circuit is open or shorted.