This surface-mounted operating module combines a button and bus coupler for the KNX system in one device. Thanks to its IP44 protection, it is also suitable for damp environments. The bus coupler enables various KNX functions to be triggered by simply pressing the buttons - ideal for light, blind and scene control or as an encoder in the automation system. https://elecena.pl/product/30452240/516230-button-bus-coupler-wg-ap-2-way-surface-mounted 2026-06-28 https://elecena.pl/product/30452240/516230-button-bus-coupler-wg-ap-2-way-surface-mounted 2026-11-05