The DALI line can be run up to 300m using 1.5mm squared twin active cable. The DALI specification allows for maximum 2V drop in the communication signal. The DALI line does not require termination of the line and supports all wiring typologies except rings and closed loops (trees, branches and chains are all acceptable).
A DALI line can be connected to a maximum of 64 DALI type devices. Every DALI line requires a DALI power supply.The DALI power supply is a current limited device ensuring that the line current does not exceed 250mA. A DALI control system can be connected at any position on the line. If the control system adheres to the DALI standard protocol, multiple control systems can exist along the same line.