Video Security Guard Station with NFC Reader. Receive direct calls from tenant stations. 3.5'' screen doubles as the station’s menu screen as well as displays video when communicating with a video entrance station. Handset or hands-free communication methods. 'Reception Mode' allows all calls to be routed through the GT-MKB-N before being transferred to the tenant station. Built-in NFC reader allows a quick and simple way to update tenant directory information from an Android® mobile device. Consumption. Max. 250mA. Communication: Open voice: Voice-actuated, Handset: Voice-actuated/Full-duplex. Monitor: 3.5 inch TFT color LCD. Mounting: Desktop use (with desktop stand) or surface wall-mount.