X-10 expander module for LightSYS™ and ProSYS™ / ProSYS™ Plus main panels. It allows to control up to 16 X-10 devices. The activation of X-10 devices can be done by the user or automatically. Provides physical communication interface between the control panel and the X-10 devices. Connection to BUS. Max. distance: 300m. Consumption: 3mA (typical).