It is a systems, which detects fire early, where in all loop devices in the systems are individually addressed to provide the panel with absolute unique identification of each devices. The systems monitors any changes caused by dust or smoke and then adjusts the calibration accordingly to maintain each sensor at its original sensitivity. The systems carries out a self-test automatically every 24 hours, as well as separate adjustment for day and night. The system can be integrated along with building management systems, CCTV and Access Control Systems ensuring total safety and security at one monitoring station