Aiphone GT Video-intercom System Guide
Internal Tenant Stations 
Master monitor stations have the capability to support up to three additional 
sub-master monitor stations, or monitor stations, within the same tenant's 
apartment, unit, or office. 
Sub-master monitor stations must work in conjunction with a master monitor 
station. 
Monitor stations may be used on their own if the tenant only requires only one 
station inside, or as more economical (but less capable) master and sub-master 
monitor stations if the tenant requires more than one station.  
There are two Aiphone GT master monitor stations, the GT-2C and the GT-1C. 
The GT-2C master monitor station would be most 
tenant's first choice. The GT-2C features include 
(blue-highlighted features are unique to this 
monitor):
● Up to 4 video-intercom monitor stations 
per tenant; one GT-2C plus up to three GT-
2H sub-master monitor stations.
● All four monitor stations are powered by a 
local power supply in the apartment. (One 
24VDC 2A power supply may power 4 adjacent tenants with GT-2Cs and no 
sub-master stations, or two adjacent tenants with sub-master monitors.)
● Support for a tenant door station for better security and elimination of the 
old-style peep hole.
● Support for a tenant door bell button.
● Digital PTZ (Pan-Tilt-Zoom) viewing of 170° 
wide angle camera views from entrance 
stations or a local door station.
● Audio communication between internal 
tenant stations, entrance stations, door 
station, or concierge/guard stations.
● Optional GT-HS handset may be added for 
private conversations.
● Video identification of visitors at door or 
entrance stations.
● Recording visitor images automatically, so you may see who stopped by 
upon return, or also at any time you like manually.
● Supports Aiphone Suite Security.
● Unlock doors.
● Local NTSC video output for CCTV integration.