Art. 01514 with 2 channels that can be programmed as inputs or outputs. Switches, traditional push buttons, auxiliary contacts, LED and electronic relays can operate with this new device to achieve a wide variety of applications. The maximum length of the input connection cables is 10m. The 2 inputs/outputs interface supplies the scanning voltage and power supply for the LEDs (max 2 mA). The new article joins the current 4 inputs/outputs interface for LED KNX (art. 01515).