The kit includes: 1 x art. CA2100P - CIAO wall-mounted entrance panel with facility for 1/2/4 buttons, 4 x art. 6751W/U - MINI hands-free door-entry phone complete with adapter plates art. 6754, 1 x art. CA9210 - 2 double-height buttons for CIAO entrance panel, 1 x art. CA9211 - 4 single buttons for CIAO entrance panel, 1 x art. CA9213 - 1 large button for CIAO entrance panel, 1 x art. CA9212 - 4 double buttons for Ciao entrance panel, 1 x art. 1209 - video kit power supply unit. Simplebus2 digital 2-wire system.