Aiphone GT-MKB-N - Video Security Guard Station with NFC Reader Model: GT-MKB-N The GT-MKB-N is a video guard station for the GT Series multi-tenant video intercom system. It can be surface mounted to the wall or a 3-gang electrical box, or may be desk mounted using the included desk stand. The GT-MKB-N features a keypad for... Aiphone $1,044.00 $652.50