Head office of detection of monoxide of 4 zones, with two levels of alarm. 3 exits of relay for zone (two of control extraction / ventilation and one of general alarm). Indicator by means of display of CO'S concentration in ppm (Sensibility from 0 to 300 ppm). Compatible with the detectors DCO-170 and DCO-300. Rapid time of response. Up to 15 detectors for zone. Authorized, in conformity with the procedure IT JOINS 23300, CE, WEEE and RoHS. Supply to 230Vac. Connection with the detector by means of cable hose of 3 x 1.5 mm ² and free of halogens. Dimensions: 420 x 336 x 118 mm.