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User Manual
VIDEO DOOR PHONE CAV- 71B

513-11, Sangdaewon-dong, Jungwon-gu, Seongnam-si, Gyeonggi-do, Korea

Int’l Business Dept. : Tel.; +82-31-7393-540~550 Fax.; +82-31-745-2133 • Thank you for purchasing COMMAX products.
Web site : www.commax.com • Please carefully read this User’s Guide (in particular, precautions for safety) before using a product and follow
instructions to use a product exactly.
Printed In Korea / 2010.0 4.101
• The company is not responsible for any safety accidents caused by abnormal operation of the product.

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Table of Contents

1. The Function and Name of each Part 2

2. Features and Main Function 3

3. Package 4

4. System Layout 4

5. Wiring Diagram 5

6. Installation Method 6

7. Operating Description 7
Visitor Call & Monitoring
Interphone Function
Burglar Function
Review Function
Product Setting

8. Check Point in Trouble 12

9. Specification 13

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Warnings and caution

Make sure to follow the instructions to prevent any danger or property losses.

It indicates prohibition.

Warning
It indicates prohibition of disassembly.
Death or serious
injury is expected. It indicates prohibition of contact.

It indicates dos and don’ts.

It indicates that the plug should be pulled out from the socket.

Warning

Do not put the plug in the socket Do not connect to other products Do not forcibly bend the cord or
simultaneously. while in use. put a heavy object on the
It may generate abnormal heat It may cause breakdown. product.
or cause a fire. It may cause a fire.

Do not use water, thinner or a Do not install the product in a Do not forcibly pull out the
detergent used to wash oil products humid place. cord from the socket.
when you wash the exterior. It may cause an electric shock or If the cord is damaged, it may
Make sure to wash it by using a dry cloth to a fire. cause a fire or an electric shock.
prevent any breakdown or electric shock.

Do not put the plug in the Do not disassemble, repair or Do not use AC circuit breaker.
socket with a wet hand. modify the product. It may cause an electric shock.
It may cause an electric shock. It may cause a fire, an electric shock
or an injury due to malfunction of the
product.

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Warnings and caution

It indicates prohibition.

Caution
It indicates prohibition of disassembly.
An injury or property
losses are expected It indicates prohibition of contact.

It indicates dos and don’ts.

It indicates that the plug should be pulled out from the socket.

Caution

If the socket holes are larger Make sure that dust or foreign Make sure to prevent foreign
than normal, do not put the substances are not gathered substances from entering the
plug. on the product. product.
It may cause an electric shock It may cause a breakdown.
or a fire.

Do not put a heavy object on Do not disassemble or give an Avoid direct rays of the sun or
the product. impact to the product. heating devices at a time of
It may cause a breakdown. installation.

Install the product in a flat and Pull the plug if the product is If the product generates strange
stable place. not used for a long time. sound, make sure to pull the
Otherwise, it may not function plug immediately and contact
properly. Commax service center.

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1. The Function and Name of Each Part

▶ function

No. Name Details

1 Charging terminal
2 Volume for call volume control Control the call volume.
3 Monitor button View the screen by door camera or talk.
4 Volume for talk volume control(H/F) Control the talk volume.
5 Interphone button Talk by interphone between the rooms.
6 Menu/Set button Burglar, Room ID, Interphone receiving rejection and RF ID are set.
7 Up button Up direction key
8 Left button Left direction key
9 Down button Down direction key
10 Power supply switch Control the power supply of product.
11 Enter button Execution button
12 Right button Right direction key
13 Talk button Talk in calling over the door and interphone.
14 Open button Operate on Door release of door camera.
15 Record button Record the screen of camera.
16 Speaker Talk voice and call voice is spoken.
17 Chargingmode power lamp Display that charging condition of handset is normal.
18 Handset Wire type(CAV-71B)
19 Burglar/Automatic video recording lamp Red lamp in burglar set, Green lamp in automatic video recoding is flashing.
20 Power source code Supply power source of product. (AC100V-240V Free-voltage)
21 Microphone Send the voice in hands free talk.
22 Input terminal(INPUT) Terminal for input in connecting.
23 Output terminal(OUTPUT) Terminal for out in connecting.

23
24 Output
Handset
terminal(OUTPUT)
Speaker Terminal for out in connecting.

23
25 OutputHandset
terminal(OUTPUT)
mike Terminal for out in connecting.

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2. Features and main Function

1. Features
● 7” WIDE TFT-LCD
● Suface mount type installation method

● FREE VOLTAGE power supply

● Menu control by on screen display(OSD)

● RF(2.4GHz) Wireless handset

2. Main function
● Interphone call and talk function
● Image storing (128 cut) function

● Burglar function

● Door Open Function

● CCTV interworking

● 4 Door units & 20 Room station connectable.

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3. Package
24 25
1 3 5 6 8 9 11 13 14 15 16
2 4 7 10 12

▶ images

● Moniter unit : CAV-71B

● Wireless Handset
● User manual
● Wall Bracket
● Fixing Screw

4. System Layout
▶ images
Master

100m(at Cat.#5)_6wire

● The number of door camera connection: 4 units (Max.)

*CCTV Camera connectable
● The number of household monitor connection: 20 units (Max.)
4

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5. Wiring Diagram
▶ images

Room unit 1

Room unit 2

NEXT ROOM UNIT

● Notes for connecting

-Maximum number per line from the slave connection terminal of main unit is 5.
-Please connect wiring terminal carefully on polarity.
-Please use UTP (CAT. 5) for cable and 14~24AWG for others.

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6. Installation method
▶ Installation method of monitor

● Notes for installing

-Please keep the product away from a magnetism, severe moisture, and

145cm
direct ray of the sun and nearby heater, which may influence on the product.
-Suitable height for main unit is 1450~1500mm from the bottom to the screen.
-Please arrange the handset after installation completed.

▶ Installation method of camera (at DRC-4CH)

● Notes for installing

-Please keep the product away from a direct ray of the sun or strong reflected light.
(You may not get clear screen quality.)

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7. Operation Description
1. Visitor call & monitoring

● Press Call button on camera to see the visitor’s look with chime sound from the
household monitor.
● If you want to talk, press the TALK button to communicate in hands-free mode.

● If you hold up handset, communication is available by handset.

● Press the MONITOR button to see condition of the door in standby state, and press the

RIGHT ( ▶ ) button to see the screen of next camera.

▶ At that time, the camera is not set as connecting with DIP S/W of main unit, that

channel is passed.
● Pressing the OPEN button while talking or monitoring over the camera, then close the

contact relay for about 4 seconds.

● Pressing the REC./IMAGE button while talking or monitoring over the camera, then

store 1 cut at that moment.

● Press the MONITOR button to end while talking over the door camera by hands-free,

put down the receiver to end communication while talking over handset.
● When visitors call simultaneously at more than 2 cameras, chose a camera you wish to

talk by using the UP/DOWN direction and press the talk button.

2. Interphone function

● This function is to call or to communicate the other room.

● Press the INTERPHONE button to display ROOM ID on the screen.
● Place an arrow to call desired ROOM using UP/DOWN button and press the ENT button,
then you can hear call sound (melody) in the responding ROOM.
● Press the TALK button or hold up the handset to communicate each other.

▶ Own ROOM number is written in parenthesis and cannot be called. Ex.: [Room 1]
▶ If Room ID set to reject interphone call receiving is called, “REJECT CALL” is displayed.
● In case of calling a room number without a video phone, “Unconnected Device” is displayed in OSD.

● In case the line is busy with another device, “Interphone Busy” is displayed.

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7. Operation Description
3. Burglar function

This function is to execute burglar set by magnetic switch.

● Press the MENU/SET button and set Yes(Y) or No(N) with the right(¢π) button in burglar
set mode, and then the MENU is out after pressing MENU/SET button.
▶ It is available only in case that the magnetic switch connected to the main unit is closed.

(Holding time: 60 sec)

▶ If ‘Y’ is selected, red lights in all monitors is flashing simultaneously.

● If the burglar function is required after the set is completed, a holding time is needed and
a siren sounds with OSD message. (Holding time to release: 30 sec)
▶ In release, press the ENT button according to the OSD menu, restore is available only

in case that the magnetic switch connected to the main unit is closed.

4. Review function

This function is to see the stored screen by manual or automatic.

● Press the REC./IMAGE button and then enter into Review mode with ENT button.
● Stored screens are showed per 6 screens and you can see 6 cuts in order with
the RIGHT(▶) button.
● Place an arrow on 1 screen with the UP/DOWN(▲,▼) button to review it per 1 screen.
● Every 1 screen is reproduced and showed per 1 cut in order with the RIGHT(▶) button.

OSD:
1 sereen

▶ 6 sereen

OSD:
▶ 1 sereen

6 sereen

● Press the REC./IMAGE button and menu out finish

▶ It is showed from the last stored screen and all 128 cuts are stored.

▶ Please be noted that an additional screen to be stored after completion of 128 cut stores,

the screen is removed from the first stored screen.

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7. Operation Description
5. Product setting

5-1. Room ID set

Please set Room number to be designated in Interphone Call.
● Switch to Room ID set mode with MENU/SET button. Press the ENT button after

placing an arrow on desired Room number with UP/DOWN(▲,▼)

or LEFT/RIGHT(◀, ▶)button, and then the Menu is out.

5-2. Interphone Call Rejection set

It is set when you don’t want to receive the Call from the other Room.
● Switch to Inter. Reject call mode with MENU/SET button and select Yes (Y) or No (N)

with RIGHT(▶) button, and then the MENU is out after pressing ENT button.

5-3. Time Adjustment

It is set to store the time when the screen is stored in the image memory.
● Switch to Time set mode with REC./IMAGE button with the DOWN (▼) and ENT button.

OSD:
Review 09/mar/06 12:30:00
▶ Time set ▲
Auto record Day set :09
Del. Whole memory ● Complete: ENT

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7. Operation Description
● Place an arrow(▲) at the point to be adjusted with LEFT/RIGHT(◀, ▶) button
and adjust with UP/ DOWN(▲,▼) button.
● A set is completed, press the ENT button to store, and then the Menu is out after

pressing REC. IMAGE button.

5-5. Automatic recording
This function is to store 1 cut of momentary screen automatically when the visitor
press the Call button at the door.
● Press the REC./IMAGE button and enter into Auto record mode with DOWN(▼) and
ENT button. Then Select yes(Y) or no(N) with RIGHT(▶) button and then the Menu is
out after pressing REC./IMAGE button.
● Switch to Time set mode with REC./IMAGE button with the DOWN (▼) and ENT button.
OSD:
Review
Time set
Auto rec Y
▶ Auto record
Del. Whole memory

▶ If the set is in “Y”, automatic recording lamp(Green) located in upper part of the
product is flashing. (the lamp of the other ROOM UNIT is also flashing at the same time)

5-6. Stored screen Deletion

This function is to delete all of unnecessary screen stored in the memory.
● Press the REC./IMAGE button and switch to Whole memory del mode with the DOWN(▼)

and ENT button. Then select yes(Y) or no(N) with RIGHT(▶) button. All memory contents
are deleted after pressing ENT button.

OSD:
Review
Time set Del.Whole memory Y
Auto record Push the enter
▶ Del. Whole memory

▶ The Menu is out after pressing REC./IMAGE button.

5-7. Screen Adjustment

● Press the MENU/SET button and switch to the screen adjustment mode after pressing ENT button.

● Pressing the ENT button show the finger picture(☞), and then place it to be required

in adjustment mode with UP/ DOWN(▲,▼) button and press the ENT button again.
● The level is increased or decreased with LEFT/RIGHT(◀, ▶) button and turn

back to the previous menu after pressing MENU/SET button again.

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7. Operation Description
OSD:
▲ ▼ ENT ◀ ▶ MENU / SET
CONTROL MENU CONTROL MENU CONTROL MENU CONTROL MENU
Contrast Contrast
Brightness Brightness
Color Color
Hue Hue
☞Color ☞Color
Reset Reset
Exit Exit

▶ Please adjust other screen adjustment on the same way.

● To initialize the screen adjustment, please press ENTER button in RESET place,
then it is changed to the initialized value that is set on production.

OSD:
CONTROL MENU CONTROL MENU CONTROL MENU
Contrast Contrast Contrast
Brightness Brightness
Brightness Hue Hue
Color Color
Hue ☞Reset Reset
Exit ☞Exit

● If all screen adjustment is completed, the MENU is out either pressing MENU/SET
button in EXIT place or pressing the MENU/SET button.

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8. Check point in trouble

If you think that the product has trouble, please first check below contents before you ask a repair.

Troubles Check Point Actions

●
The power supply is 1.The power supply 1. Please connect the
not on. code is missing or not. power supply cord
●
All works are stopped 2.The power supply switch 2. Please turn on the power
(down) is off or not. supply switch (down)
pushing to the right.

●
A Call operation is not 1.The wiring between other 1. Please refer to connection
performed. units is connected correctly related page and manage.
(Door, Interphone function) in good order or not. 2. Please connect correctly
2. The wiring is missing or not. to the terminal.
3. A Room id is set or not. 3. Please refer to Room id
setting related page.

●
The product does not 1. A sound volume lies 1. Please adjust the sound
produce the sound. in minimum or not. volume properly turning
(Call volume, Talk volume) to the right, as you want.

●
The screen is dark. 1. There is a strong re- 1. Please change the angle
●
The screen is strange. flected light behind the of camera lens.
visitor or not. 2. Please initialize the
2. The screen control is screen control.
adjusted correctly. (Refer to setting related page)

●
Talking by handset is 1. The battery is dis- 1. Make sure the battery
not performed. charged or not. is fully charged.
(only CAV-70B) 2. A charging terminal is (More than 5 hours)
stained with foreign 2. Please wipe clean on
body or not. a dry cloth.

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9. Specification

ITEM CONTENTS(CAV-71B)

Wiring number Main unit: 6 lines, Master: 6 lines

Rated voltage AC100-240V, 50/60Hz

Talk method Hands-Free: Voice switch method, Handset: wire(71B)

Display unit 17.78Cm(7”) TFT-LCD

Door (individual door): ring electronic chime 3 sounds

Call sound
twice repeatedly, Interphone: electronic melody sound

Power On standby: 4.4W

consumption
On operating: 17W

Communication MAIN UNIT to MASTER : 20m/ Ø0.5(CAT. 5)

distance
MASTER to MASTER : 20m/ Ø0.5(CAT. 5)

Talk channel 1 channel

Dimension 315(W) x175 (H) x53(D)

Weight 1.7kg

Temperature 0℃~ 40℃

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Memo

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