For TwinBus door intercom systems with voice communication to the apartment door. For communication between the apartment door and the apartment. Extra flat design, 23 mm high. 1 bell button. Illuminated light button (night design). Generous nameplate, replaceable from the front. Without door opener function on the apartment door. For indoor use. 2-wire bus technology. Easy integration into existing TwinBus systems. Dimensions: 90x152x23 mm (WxHxD). Dimensions of lettering field: 45x26 mm (WxH). Accessories: ==>UP frame 17322.. for flush-mounted and hollow wall installation
