Sensor Interface to connect conventional motion sensors or pushbuttons to a DALI system. Configuration options are for example: range, target address, DALI commands for on/off, hold time, … . Multiple sensors within one group synchronise automatically. Two different versions are available: for potential free switching input (DALI SI) and switching input for mains (DALI SI1L). The device is designed to fit behind a light switch in a flush-type box.