The addressable Control Module M201E serves for the actuation of an external device via the bi-directional communication on the loop with System Sensor protocol. The control module provides two modes for actuation of the external device: In the monitored mode an external power supply can be switched to the linemonitored output. In the unmonitored mode a dry change-over relay contact can actuate the external device. The way of actuation and the monitoring mode can be selected by means of DIL-switches. A status LED indicates the condition of the control module. Separate terminals enable the operation of the module with or without the integrated dual-isolator. Accessories for mounting on a wall, on a plate or on a DIN rail are available.