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The PC4-DALI2 push-button coupler enables up to 4 commercially available push-buttons to be integrated into a DALI2 lighting system. The PC4-DALI2 can be installed invisibly behind existing push-buttons in a standard 55mm box. No additional power supply is necessary because the push-button coupler is powered by the DALI bus. The function of the individual push-buttons is freely programmable during commissioning via the Steinel app. In combination with a DALI2 Application Controller, programmed light scenes can be called up in addition to classic functions such as ON/OFF and TouchDIM, for example. Excellent for use with our products of the Control PRO II series in each case in the DALI2 APC interface.