B&K CT600.1 - Manual (Page 28)

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Common Control Triggers
The B & K CT Receiver line incorporates common control triggers that may be used for whole house or speci-
fied zone events such as telephones and doorbells. There are two common controls on the six zone receiver
(one on the three zone). The common control allows up to 24VAC or DC voltage sensing. For example, typ-
ical applications might involve a doorbell and front door security camera. When the doorbell is pressed, the
CT receiver will switch all zones to the specified A/V source input that the camera is connected to. The user
may specify which zones should or should not respond to either or both Page/Events (see Page/Event expla-
nation on page 47). The diagram below illustrates the installation of a front door security camera coupled with
a doorbell. By default, Page/Event 1 switches to input 8 when a voltage is detected through Common
Control 1 IN- and IN+. Also, Page/Event 2 switches to input 9 when a voltage is detected through Common
Control 2 In - and In +.
Zone Control Trigger
Each zone also has an available 12VDC trigger. An external amplifier, fan, screen, etc. may be triggered with
the 12VDC control out from the zone that it is connected to.
T856A standard
Common Control Triggers
Ground
12V Control Out
Pin 3 is Ground
Pin 7 is 12V Control