The SIENNA® elements form a bus system consisting of sensors and actuators which use the in-house power lines as a communication bus. SIENNA® uses LON, the world's leading device networking technology from Echelon. The communication between the SIENNA® elements is confined to the CENELEC C-Band and/or the B-band and the system is compliant with the CENELEC EN50065-1 standards.
The SIENNA® sensor_actuator modules combine a sensor and an actuator in a single physical device. Each module has an input and an output corresponding to the functionality. These modules provide a cost and space saving solution for applications where the sensor and actuator need to be placed at the same location. The SIENNA® sensor-actuator modules can be combined with other SIENNA® sensors and actuators.