The system draws air from the monitored area via a pipe system with defined air sampling points, the air being passed to the detection unit where evaluation takes place. All system functions are continuously monitored by the detector box itself including a rupture or blockage of the pipe system, as well as, any  fault condition of the air sampling unit; the fault. LED Indicators are shown on the power supply box and an LCD display within the detector box is a user operated diagnostic tool which offers quick and easy service. Potential-free contacts are used for connection to a central fire detection unit (CFDU) and for triggering other signal and/or alarm devices.
Against all types of EN 54 test fires this system has excellent response performance. The detector modules can be set to different sensitivities and depending on the application, a detection sensitivity of up to 0.05% obscuration/m can be set. Additionally, the smoke detection system continuously maintains this high sensitivity level even when protecting dusty areas.