System of precocious detection of smokes for aspiration XCC. Designed, made and certificate according to norm EN54-20 to be employed only at class C. Equipped with a chamber of analysis for bundle of light laser. It incorporates 1 entry of pipeline of sampling forming the only zone of detection. Detector for areas of up to 1600 m ². Maximum length of pipeline 1 x 110 meters or 2 x 80 meters (with ramifications). 2 configurable thresholds of alarm (Prealarma and Alarm). The detector consists of 3 exits of relay for dry contact for indication of prealarma, alarms and failure. Supply to 18 - 30 V. I consume: 255 mA. Dimensions: 225 x 225 x 85 mm.