Spec Sheet Preview: The Alpha Communications® VKGB2/_AF GB2 series video-intercom kits feature our least expensive multi-unit video-intercom system and configurations, for buildings with 1 through 10 apartments, at a price that can't be beat! The 'x' in the model number indicates the kit size (1-10 apartments). Each kit contains 1-10 VESTA2 SE GB2 surface mount 4.3" screen color video-intercom monitor station (for each apartment) with corresponding number of D2L-GB2 video splitters required, 1- FA-GB2/B system power supply and 1- NEXA …