Kocom Kit: KC-MC30 Video Door Intercom Camera & KCV-D374-W 7" Monitor 4 Wire System, 3.6mm Camera Lens, White LED At Night, Surface Mount, 4 wire system KC-MC30 Video Door Intercom Camera & KCV-D374-W 7" Monitor 4 Wire System, 3.6mm Camera Lens, White LED At Night, Surface Mount, 4 wire system