DUOX KITS only require two non-polarized wires for installation, maintaining the highest quality in the product and design, which simplifies the installation of systems. All the necessary equipment for a complete installation of a video door entry unit is included (it does not include the interior monitors of the houses and the connectors). Includes: 70328.- CITY DUOX 7CP209 plate. S7: 130x341mm. 8857.- S7 embedding box: 115x328x45mm. 2441.- 16 calls extension module (2 units). 3255.- Line termination (2 units.). 3244.- DUOX filter. 4802.- 12VAC/1A power supply. DIN4. 4812.- 18VDC/1,5A power supply.