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.
SIENNA® sensors send commands to the SIENNA® actuators and when required receive acknowledgements from these actuators. Any SIENNA® sensor can be combined with any SIENNA® actuator. The SIENNA® sensors can be combined with all commercially available flush-mounted switches.