att door phone controller 사용자 설명서

3.  Verify all connections when connecting the door strike

contacts on the AT&T Door Phone Controller to existing

door open buttons. Make sure of the following:

■

■

Auxiliary Alert Device

The NO and C contacts are connected in parallel to a

normally-open button.

The NC and C contacts are connected in series to a

normally-closed button.

(optional)

In most configurations, the Door Phone Controller will cause a

telephone to ring when the doorbell button is pushed. An aux-

iliary alert device (chime, bell, horn, tone generator, etc.) can

also be used as an alert to notify the person inside the building
that the doorbell button has been pushed (Auxiliary Alert

Mode). A low-voltage device (24V or less) is recommended.

alert device (door bell/chime) to the Door Phone Controller:

1.

Install the auxiliary alert device (door bell/chime) as in-

structed by the manufacturer’s installation manual.

2.  The Normally Open (N.O.) and Common (C.) relay con-

tact, located on the Door Phone Controller back panel

troller terminal block. Wire these to the auxiliary alert

device and it’s power source as instructed by the

manufacturer’s installation manual.

When the Door Phone Controller has been mounted to a wall

or placed on a shelf and all cables and wires have been

connected to the back panel, plug the transformer into a 120

Installation Procedures   2-17