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Operating Manual
VH40/45 and VFS40/45
(English version)
Indoor Video Stations
with 2-wire QwikBUS Technology

Legal information
Document type: Operating Manual
Product: Indoor Video Stations with 2-wire QwikBUS Technology,
VH40/VH45 and VFS40/45
Target audience: Authorized technicians
Language: English
DocumentNumber_Version: #####_00
Creation date: 04.2013
Publisher/Manufacturer
STR Elektronik
Josef Schlechtinger GmbH
Auf dem Ohl 9, D-57482 Wenden, Germany
© STR Elektronik Josef Schlechtinger GmbH
Reproduction of this manual, in whole or in part, is permitted only
with the written consent of Joseph Schlechtinger GmbH.
All product names mentioned in this manual are trademarks of the
respective companies.
The information in this document is subject to technical changes.

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Indoor Video Station Operating Manual - 04/2013
Table of Contents
1 General information 5
1.1 How to use the operating manual 5
1.2 Symbols used 5
1.3 Copyright 6
1.4 Warranty 6
1.5 Applied standards 6
2 Security 7
2.1 Proper use 7
2.2 General hazards 7
2.3 Electrical hazards 7
2.4 Maintenance and repair work 7
3 Structure and function 8
3.1 Package contents 8
3.2 Structure and function of the Indoor Video Stations 8
Function 9
4 Installation and wiring 10
4.1 Safety instructions for installation and wiring 10
4.2 Important information 11
4.3 Wiring 11
Maximum cable lengths 11
4.4 Installation 13
5 Activation and programming 16
5.1 General information 16
5.2 Activation (single programming) 16
5.3 Parallel programming 19
5.4 Programming internal communication (VH/VFS45) 21
5.5 Customizing menu functions 22
Menu level "Internal call" 22
Menu level "Switch 1" 22
Menu level "Switch 2" 22
Menu level "Call mute / Call unmute" 23
Menu level "Basic Settings" (e.g. Ringer volume, Door list / ringtone and so on) 23
Menu level "System settings" (e.g. Language, Factory settings and so on) 26
5.6 Programming additional modules 31
6 Errors 32
6.1 Troubleshooting safety 32
6.2 Error causes and troubleshooting 32

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Indoor Video Station Operating Manual - 04/2013
7 Removal and disposal 34
7.1 Removal safety 34
7.2 Removal 34
7.3 Disposal 34
8 Technical information 35
8.1 VH40/45 and VFS40/45 Indoor Video Stations 35
9 Appendix 36
9.1 Accessories 36

General information
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Indoor Video Station Operating Manual - 04/2013
1 General information
1.1 How to use the operating manual
This operating manual describes the safe and ecient handling of your
STR Indoor Video Station.
It is part of the package contents and must be kept accessible to the user
at all times.
Due to technical developments, the illustrations and descriptions in this
manual may dier slightly from the actual indoor video station delivered.
We assume no liability for damage caused by non-observance of these
operating instructions.
1.2 Symbols used
All safety information in this manual is identied with appropriate sym-
bols. The signal words at the beginning of the safety message express the
potential extent of the hazard.
DANGER!
This symbol/word combination indicates an imminently hazardous
situation that will result in death or serious injury if not avoided.
WARNING!
This symbol/word combination indicates a potentially hazardous
situation that could result in death or serious injury if not avoided.
CAUTION!
This symbol/word combination indicates a potentially hazardous
situation that could result in minor injury if not avoided.
IMPORTANT!
This symbol/word combination indicates important information that
can help avoid physical or environmental damage.

General information
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Indoor Video Station Operating Manual - 04/2013
1.3 Copyright
This manual and all documentation supplied with this unit remain the
copyrighted property of STR.
Their use is permissible and desirable only for the purpose of operating
the device.
This documentation may not be reproduced or made available to third
parties, especially our competitors, without the express permission of STR.
1.4 Warranty
The manufacturer guarantees the product in accordance with the terms
and conditions of purchase and delivery. The warranty is void if:
> damage is caused by improper handling,
> repairs or modications are performed by unauthorized personnel,
> non-STR accessories or replacement parts are used
> defective components are not repaired immediately in order to limit the
extent of the damage and avoid compromising the safety of the equip-
ment (maintenance obligation).
1.5 Applied standards
The following European and national standards were applied in develop-
ing and manufacturing the Indoor Video Station:
> VDE 0860 - Audio, video and similar electronic devices
- Safety requirements
In assessing the risks posed by the device, the following standards, BGV
(accident prevention guidelines issued by the employers' liability insur-
ance associations in Germany), BGR (rules supplementing the BGV) and
BGI (additional information regarding the BGV) were applied:
> VDE 0100
> VDE 0800
> VDE 0805
> Health and safety regulations (VSG)
> Accident prevention regulations (UVV)

Security
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Indoor Video Station Operating Manual - 04/2013
2 Security
2.1 Proper use
The Indoor Video Station with 2-wire QwikBUS Technology is an access
control and internal building communication system for everything
from single family homes to residential complex, commercial and public
buildings.
Any other use is considered improper.
Its intended use includes observance of this manual.
2.2 General hazards
There are general risks involved in dealing with electrically powered
devices. Therefore, please observe the legal requirements for health and
safety (VSG) as well as any other generally recognized health and safety
rules and accident prevention regulations (hereafter referred to as UVV).
Do not make any changes to the Indoor Video Station. The manufacturer
is not liable for damage caused by improper modications.
2.3 Electrical hazards
When installing the device, be sure to note the prescribed values for volt-
age and amperage (see technical data).
Only qualied electricians may work on the electrical system or the con-
trol system.
Unplug the power cord before beginning work.
Regularly inspect the plug and power cord and have them replaced by a
qualied electrician if damaged.
2.4 Maintenance and repair work
Maintenance and repair work may only be performed by authorized
personnel. These are persons who are authorized on the basis of their
education, training or experience to perform the required tasks and to
recognize and avoid possible dangers. They must be able to provide proof
of knowledge of the relevant safety standards, regulations and accident
prevention rules and have read the manual.

Structure and function
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Indoor Video Station Operating Manual - 04/2013
3 Structure and function
3.1 Package contents
The Indoor Video Station consists of a video intercom station, with or
without a handset depending on the model, as well as the operating
manual.
3.2 Structure and function of the Indoor Video Stations
The Indoor Video Station consists of a 4.3-inch TFT screen inside a closed
glass front, six touch buttons, a status LED and an additional handset
(VH40/45).
Fig. 1.
1
2
3
4
5
6
Structure of the Indoor Video Station (VH40/45 shown)
1 4.3" TFT screen for displaying video images
2 Touch buttons (multifunctional)
3 Door opener touch button
4 LED (red) for status indication
5 ON - OFF touch button / home button (exits menu functions)
6 Handset for discreet communication with the door (VH 40/45 only)

Structure and function
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Indoor Video Station Operating Manual - 04/2013
Special Features VH40 VH45 VFS40 VFS45
Video intercom station x x x x
Video intercom station with handset x x - -
Portomat function for building and
oor entrance
x x x x
Audio and visual distinction between
front door, oor or internal calls
x x x x
Programmable call distinction for up to
7 door stations
x x x x
Choose from 15 dierent ringtones x x x x
7 programmable camera memory
locations
x x x x
Audio and video privacy setting x x x x
Internal communication with up to 7
other internal stations
– x – x
Forward incoming calls to other inter-
nal stations
– x – x
Start a conversation with the door
speakers manually
– x – x
Function
The STR VH40/45 and VFS40/45 Indoor Video Stations can be custom-
ized to meet the exact door communication needs of everything from
single-family homes to residential complex, commercial and public
buildings. They also provide increased safety for facilities such as daycare
centers, schools or nursing homes, especially in combination with elec-
tronic access control systems.

Installation and wiring
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Indoor Video Station Operating Manual - 04/2013
4 Installation and wiring
4.1 Safety instructions for installation and wiring
The installation and wiring of the STR QwikBUS Indoor Video Station
should only be performed by authorized, trained and instructed person-
nel with the appropriate knowledge.
The general safety requirements for telecommunications equipment
(VDE800) must be observed.
DANGER!
Risk of death from electrocution!
Contact with live terminals may lead to serious injury.
Turn o the power supply.
Secure the power supply to prevent it from being turned back on.
IMPORTANT!
Possible damage to property from improper installation!
Voltage from the public power grid supplied to the wrong terminals
on the device may damage the electronics.
Do not connect low voltage terminals to the public power grid.
IMPORTANT!
Possible damage to property from improper installation!
Overly stripped wires may result in short circuits and damage to the
electronics if a wire strand accidentally comes loose.
Strip cables only to the extent necessary to prevent a short circuit,
but not more than 3 cm.
Route the cables properly.
Use cable grips to prevent pulling.
IMPORTANT!
Possible damage to property from electrostatic charging!
Electrostatic charging may cause devices to be destroyed through
direct contact with printed circuit boards.
Discharge yourself before touching the device.
Questo manuale è adatto per i seguenti modelli
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