The KTB-1 A Bell panel by m-e GmbH modern-electronics is an anthracite doorbell system operating at 12 V/1 A. It features a nameplate for easy identification and is suited for residential or commercial entryways. This product is ideal for locations requiring a robust and reliable doorbell button. https://elecena.pl/product/28918384/m-e-modern-electronics-ktb-1-a-series-bell-panel-with-light-sensor-anthracite 2025-06-07 https://elecena.pl/product/28918384/m-e-modern-electronics-ktb-1-a-series-bell-panel-with-light-sensor-anthracite 2026-08-23