TAC Xenta 151-D is a dual controller for use with two Fire Smoke Damper Actuators. It operates as part of a fire smoke system and handles the opening and closing of the dampers. The controller is a LonMark® certified device according to the Fire Smoke Damper Actuator Profile No. 11001. It communicates on a LonTalk® TP/FT-10 channel via a twisted-pair, unpolarized cable. Network variables can be monitored and configured via the TAC Xenta OP. TAC Xenta 151-D has an embedded test functionality that allows the actuators to be tested on command from the supervising system. TAC Xenta 151-D/230 is supplied with 230 VAC.