
DPK-242
Single family video intercom
2-wire system
User’s Guide

FEATURES
■ SIMPLE 2-WIRE CONNECTION, NO POLARITY
■ 15 CHORD TUNES SELECTABLE
■ DIRECTLY CONNECTING UP TO 4 EXTENDED MONITORS
■ INTERCOM FUNCTION WHEN MULTI MONTIORS INSTALLED
■ LATCH CONNECTED WITH MONITOR

1.
PARTS AND FUNCTIONS
1.1 Indoor Monitor
1. Screen
2. Blue LED Indicator
3. Extended Monitor Connection
4. Function Buttons
5. DC-IN socket
6. Outdoor Station Connection (Main)
7. Image adjustment
8. Cover
9. Wiring Terminals for Extended Monitors
10. Wall Mounting bracket
Accessory fittings: Bracket (Three 4X25 screws are needed for fastening the Mounting
Bracket). Special 4 core cable to connect with Monitor for connecting extended Monitors.
Use special 2 core cable to connect Outdoor Station.
Installation steps: The installation height of Indoor Monitor, usually from 145 to 160CM,
then fix the bracket on 86 Installation Box or wall surface directly, then install the
Monitor.
The design and specifications can be changed without notice to the user.
Right to interpret and copyright of this manual are preserved.

1.2 Outdoor Station
Mount Instruction:
Fix mounting bracket
Wire the cable to
Fix body with bracket,
1. Camera
2. Speaker
3. Call Button
4. Microphone
with screw at
recommended height
(normally at
145~160CM, and 4X25
self- taping screw are
recommended).
terminals, and test
system until it works.
then tight the screw
firmly.
1
2
3
4
W1 W2
5. Connection Terminals
6. Mounting hood
5
6

2.
Operation Instructions
■ Operation for Basic Video Doorphone
1) When visitor presses the Call Button on the Outdoor Station, the Monitor rings, at
the same time, the screen displays the visitor image.
2) When press TALK Button, you can talk with the visitors for 90 seconds; During the
talk state, press TALK again to end. If nobody answers the phone, the screen will
turn off after 30 seconds automatically. If the system connects two or more Monitors,
and when the TALK Button is pressed in one Monitor, the other Monitors will
automatically shut off.
3) When the Monitor is in standby, press Monitor Button, the screen will display the
view of the Door Station; press TALK Button you can speak to the Door Station; if
wait 30 seconds or press Monitor Button again, the screen turns off.
4) Press Unlock Button to release the Electronic Latch during monitoring or talking.
5) Adjust the two image adjustment potentiometers to change contrast and brightness.
6) Adjust the volume potentiometer on the back of the monitor to change volume level.
■ Selection of Chord Melody
1) When Monitor is standby, press CHORD Select Button and hold 2 seconds, until it
enters Chord melody selection state and plays current melody.
2) Press CHORD Select Button again to select preferred chord melody sequentially,
one more time Chord Select Button is pressed, next melody is switched and played.
3) Press any other button to confirm melody selection; if wait 30s and no Button
pressed, Monitor will exit Chord melody selection state.
■ Operation for Intercom
1) When system is connected with multi Monitors, intercom is available.
2) Intercom calling can be initiated by any Monitor. Press INTERCOM button, LED
will be lighten, and the other Monitors will ring. If TALK Button is pressed on the
called Monitor, the intercom talking is connected.
3) If INTERCOM Button is pressed, and no Monitor answers, you can press the TALK
Button to cancel or it will exit automatically after 30 seconds.
4) Intercom function is prior to monitor function, but calling function is always the
first.

3.
SYSTEM WIRING
3.1. Connecting Outdoor Station
It’s recommended to use RVV 2x0.5mm2 non-shielded Cable to connect Outdoor station.
3.2. Connecting Electronic Latch (Dry contact mode)
POWER
SUPPLY
Monitor
W1
W2
3
2
LB
1
Note 1: Latch is connected with Monitor.
Note 2: Terminal 1&2 are Normally-Open contact, 2&3 are Normally-Closed contact.
Note 3: Extra power supply for latch should be installed, and nearly all kinds of electronic
latch can be used, and in this mode, you can continue talking and monitoring during
unlock.

3.3 Connection of Extended Monitors
Indoor Monitor is capable of connecting multi extended Monitors.
First, connect the cable in the mount bracket, then connects the JS-VP port with the
monitor by using 4 core cable (which is Interconnection Cable in following diagram).
Extended wiring terminals are described as below:
1R Power positive. +12V present when outdoor station calling or being
2W Power negative (GND)
3Y Image signal (Video signal)
4B Talk and control signal
supervised.
It’s recommended to use RVVP 4x0.3mm2 shielded cable. And when distance is over 50m,
we suggest to use additional coax cable RG-59 (or 3C-2V) to connect 3Y and 2W.
Note 1: JP-VD is used for setting the video impedance. When there is only one indoor
monitor, keep the jumper (which is already on JP-VD). But when multi monitors are
installed, be sure of taking away all JP-VD of monitors except only the last monitor.

4.
PRECAUTIONS
1) All parts should be protected from violence vibration. And not allow be
impacting, knocking and dropping.
2) For clean the Lens& Screen, using hands or wet cloth is forbidden.
3) Please do the cleanness with soft cotton cloth, please do not use the organic
or chemical clean impregnate. If necessary, please use a little pure water or
dilute soap water to clean the dust.
4) Image distortion may occur if the video door phone is mounted too close
to magnetic field e. g. Microwaves, TV, computer etc.
5) Please keep away the video door monitor from wet, high temperature, dust,
and caustic and oxidation gas in order to avoid any unpredictable damage.