10-Key Video Entrance Panel Kit, 1x4 Size FEATURES Contains GT-DB audio module, GT-VB video module, and GT-NSB digital display and directory GT-10K keypad for direct dialing and access control Includes two GF-2F frames and two GF-2B flush back boxes VFD screen displays a customizable greeting message, tenant directory, and system status Surface mount with the stainless steel GT-202HB SPECS Power Source: 24V DC, use specified number ofPS-2420UL per system configuration Communication: Hands-free from entrance panel totenant station Capacity: Max. 16 Entry panels per systemMax. 4 Concierge stations per systemMax. 500 Tenant stations per systemMax. 4 Tenant stations per unit Wire: Two sets of 2-conductor, PE insulation(two common buses for audio & video)Aiphone #872002, 2 conductor PEinsulated, non-shielded, 11.05 pf/ft (Audio)Aiphone #871802, 2 conductor PEinsulated, non-shielded, 11.05 pf/ft (Video) Wiring Distance: GT-BC to farthest entrance: 980'GT-BC to farthest tenant (audio): 980'GT-VBC to farthest entrance: 980'GT-VBC to farthest tenant (video): 500'