DT 2-wire, Technical Manual, Page: 21 / 52

DT - System - Technical Guide 18
Monitor Extending Connection
1. Door Bell Call Button
Additional door bell call button can be connected to the
Monitor, so that the visitors can ring the door bell again
in front of the user's apartment. When the call button is
pressed, the Monitor will output ring tones but the screen will
keep off, and the external ringer will ring at the same time(if
a external ringer is installed).
Door bell call button
SW+
SW-
EXT-RING
GND
VIDEO
2. External Ringer
External ringer can be connected to the Monitor. The ringer
will ring whenever the Door Station call button or the door
bell call button is pressed, and it will stop ringing when the
Monitor rejucted or answered the call.
- +
12Vdc 300mA
External Ringer
SW+
SW-
EXT-RING
GND
VIDEO
3. TV -out function
Connect television to the Monitor, when the Door Station
calls, the user switch the channel to the AV channel, and the
visitor's video will show up on the screen of the television.
The core of the video cable must connect to the VD terminal,
and the shielded layer connect to the GND.
Television
video cable
SW+
SW-
EXT-RING
GND
VIDEO
1 2 3 4 5 6
ON
S1
L1
L2
SW+ SW- EXT-RING GND VIDEO
POWER
INTERCOM
UNLOCK
TALK/
MONITOR
+
- IN-USE
1 2 3 4 5 6
ON
DIPS
L1
BT1 BT2 EH GND VD
L2
CALL
UNLOCK
TALK/MON
IN-USE
1 2 3 4 5 6
ON
DIPS
L1
BT1
BT2
EH
GND
VD
L2
1 2 3 4 5 6
ON
S1
L1
L2
SW+
SW-
EXT-RING
GND
VIDEO