Short description: The 4+n system allows for the installation of an intercom system using 4 common wires in the riser, where n is the number of wires needed to control incoming door calls. Additionally, the 4+n system supports intercom systems with traditional door calls (using a 12 V AC chime) or with electronic door calls (in this case, the ringing tone is directly output through the intercom speaker).

Product features: Built-in door speaker, replacement device for 4+n standard intercom systems (e.g., TL 290, TL 290-12, TL 2690) for installation in standard door stations, adjustable volume.

Technical specifications: Compatible with the 4+n system, operates with intercoms with +8V, use mounting adapter 98066 or 98067. Dimensions: 111 x 75 x 30 mm.

Main features: Product type: Speaker module, product color: Black, brand compatibility: Grothe.

Weight and dimensions: Width 11 mm, depth 30 mm, height 75 mm.