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: 70228.- CITY DUOX 6CP207 plate. S6: 130x294mm. 8856.- Embedding box S6: 115x280x45mm. 2441.- 16 calls extension module. 3255.- Line termination (2 units.). 3244.- Duox filter. 4802.- 12VAC/1A power supply. DIN4. 4812.- 18VDC/1,5A power supply.