Call button, 1-gang for door station Program-neutral Features: Installation in a conventional flush-mounted device box. Fits in the cover frames of the Gira TX_44 design line. Modular design, allowing easy installation and expandability. Signal transmission and supply of the audio and video components via reverse-polarity-protected and short-circuit-proof 2-wire bus. The door station can be extended with an additional call button (up to 14 call button inserts, 1- or 3-gang can be connected to one door station). Call button LED lamps, white light. Even, clearly visible call-button illumination is achieved via maintenance-free, energy-saving LED technology. Sprayed-water proof call-button cover plate made of shock-resistant plastic. Name plate can be exchanged without tools and without frame disassembly. Professional labelling is available from the Gira Inscription Service www.marking.gira.com or using the Gira inscription software.