Bosch Smart Home Twinguard Dimensions

FAQs for Twinguard Single Point Solution
Question
Answer
What is the Bosch Smart Home
Twinguard?
The Bosch Smart Home Twinguard is one of
the world's first 2-in-1 smoke alarms. It is a
combination device consisting of smoke
detector with Dual-Ray technology and air
quality sensor. With the Bosch Twinguard App,
you can be connected to your Twinguard at any
time, from the road or at home. So you can get
immediate information about smoke alarms in
your home on the go. In addition, you have
access to your air quality data at any time and
from anywhere. Further information on the
Bosch Smart Home Twinguard can be found
here in the corresponding data sheet and on
the product page.
How does the reset of the
Bosch Smart Home Twinguard
work?
To restore the factory settings, please proceed
as follows:
1. First remove at least one battery. Please wait
20 seconds or briefly press the control button of
your Twinguard again after removing the
battery. This will ensure that you can
successfully restore the factory settings.
2. Then reinsert the battery and press and hold
the control button while inserting.
3. The detector will now start with a fast flashing
orange light.
4. Release the control button briefly and then
immediately press the control button on the
detector again for at least four seconds until
you hear a short acoustic signal.
5. The Twinguard then restarts and a flashing
green light indicates that the factory settings of
your Bosch Twinguard have been successfully
restored.
How do I install the
Twinguard?
The Bosch Smart Home Twinguard can be
installed in just a few simple steps. All you need
is the Bosch Twinguard App, an already
installed gateway and the accessories included
in the packaging. After starting the Bosch
Twinguard App, it guides you through the
individual installation steps. The easiest way is
to take a look at the step-by-step instructions in

our installation video or download the operating
instructions here.
What exactly does the Bosch
Smart Home Twinguard come
with?
Detailed information on the scope of delivery
and the technical data of the Bosch Smart
Home Twinguard can be found on the product
page.
Which batteries can I use in
the Twinguard?
You will need six AA size alkaline batteries.
Lithium batteries must not be used for the
Twinguard. Please use only batteries from the
manufacturers Panasonic or Duracell. Please
carry out a test alarm after each battery
change, either via the Bosch Twinguard App or
by pressing the control button on the device
itself, in order to ensure that your smoke alarm
device functions properly.
How can I attach the Bosch
Smart Home Twinguard?
To attach the Bosch Smart Home Twinguard,
use the supplied dowels and screws. For more
information, refer to the instruction manual. The
Twinguard is not intended for adhesive
mounting.
I installed the Twinguard. Why
can't I see any air quality
measurements?
The air quality sensor must calibrate itself once.
After initial installation, the air quality sensor
takes up to two hours to perform initial
measurements. Within the first 48 hours after
commissioning, a recalibration is carried out in
order to optimise the quality of the recorded
data. Please note that after about 20 minutes
you should either refresh the screen or start the
app again so that the current data is displayed.
I would like to move my
Twinguard from one room to
another. How is that possible?
You can "move" a Twinguard from one room to
another. When disassembling or assembling
the hardware, please follow the instructions in
the operating manual. To ensure both the
predefined optimum air quality ranges and the
correct detector sensitivity in the event of a fire
in the new room, please carry out the following
steps in your Bosch Twinguard App:
1.) Remove the Twinguard from the app that
you want to install in another room
2).) Reset the detector to factory settings.3).
Note: If you move to a new room, you will lose
the history of the air quality data of the previous
room. The room can easily be renamed at any
time directly in the Bosch Twinguard App.
What significance do the room
types have?
As a smoke alarm and air quality sensor, the
Twinguard has various setting options that are
specified by the manufacturer and designed for

the corresponding rooms. Smoke alarms: The
sensitivity of the smoke alarm is determined by
the room types. For example, the Twinguard is
less sensitive to disturbances such as kitchen
fumes for the "kitchen" room type. In the room
types "bedroom" and "children's room" the
Twinguard Dual-Ray detector reacts with the
highest possible sensitivity. Air quality:
Depending on the type of room, different ideal
ranges are specified for the air quality
parameters. The ideal ranges for each room
type can be seen from the green areas in the
air quality diagram. For bedrooms, for example,
lower temperatures are provided as the ideal
range than for study rooms.
My Twinguard does not
connect to the gateway. What
can I do? I don't know.
If you are unable to connect your Twinguard,
please check the following:
1. Press the control button on the Twinguard for
more than four seconds. The Twinguard will
then try again to connect to the gateway.
2.Try bringing the Twinguard closer to your
gateway and restart the search. The range of
your gateway has approximately the same
range as your WLAN router.
3 Reset the Twinguard to factory settings and
restart the installation. You will find
corresponding instructions under "How can I
reset the Bosch Smart Home Twinguard to the
factory settings?
Does the Bosch Smart Home
Twinguard work even if it is
not operated with the App and
Gateway?
If the Twinguard is not operated as a smart
smoke detector with Internet connection, a
reduced range of functions is available to you.
In this case, the Twinguard can only be used as
a local smoke alarm to display fire alarms.
How are Twinguard updates
carried out?
Information about updating the firmware of your
Twinguard can be found in the app under:
"Settings -> Service -> Software updates" A
notification appears on the home screen of your
Bosch Twinguard App for important software
updates. Simply follow the instructions in the
app to install the available updates. To finalize
the update of your Twinguard, you must press
the control button of your detector manually and
directly on the device for 4 seconds within five
minutes of the update process. Press and hold
the button until an acoustic signal sounds and
the LED band that lights up goes out briefly.
Your Twinguard will then attempt to reconnect

to the gateway. The final green light on the LED
band indicates that the connection has been
successful. After updating your Twinguard,
perform a test alarm by pressing the control
button on the device itself. This is how you
ensure the proper functioning of your smoke
detector. If several Twinguards are installed,
please perform the update for each individual
device using the above steps.
Can I use the Smart Home
Controller (SHC) in
conjunction with the
Twinguard?
The Twinguard cannot currently be combined
or operated with other products from other
manufacturers. Thanks to highly developed
sensors, a high functional depth, intelligent
algorithms and its own app, the Twinguard is
able to react completely independently.
Where can I find the
performance declaration of the
Smart Home Twinguard?
Our declaration of performance or conformity
can be found here under here under "Technical
Data"
How does the Twinguard Eco
system work?
The Bosch Smart Home Twinguard, the
Twinguard App, the Gateway, your Router and
the Bosch Cloud together form an Eco-System.
Each integrated Twinguard sends air quality
data and smoke alarms to the installed
gateway. The gateway sends this data via your
router and Internet connection to your user
account in the Bosch Cloud and stores it there.
With the Bosch Twinguard App, you can access
all data provided by the Bosch Cloud from your
smartphone at any time. This includes, for
example, the history of your air quality data.
Which radio protocol does my
Twinguard system use?
Communication between Twinguard and
Gateway is encrypted using a ZigBee HA 1.2
protocol and proprietary, manufacturer-specific
protocol extensions.
Why do I need the Twinguard
Gateway?
The gateway of the Bosch Smart Home
Twinguard connects one or more Twinguards to
your router. Thanks to this connection, your
Twinguards are Internet-enabled and can be
controlled via the smartphone. The gateway
serves as a radio protocol converter from
ZigBee to Ethernet and forwards data from the
smoke detector to your user account in the
Bosch cloud. You can find more information
about the gateway here in the corresponding
data sheet and on the product page.

What exactly does the Bosch
Smart Home Twinguard Starter
Set come with?
Detailed information on the scope of delivery
and the technical data of the Bosch Smart
Home Twinguard Starter Set can be found on
the product page.
What is the maximum number
of Twinguards I can connect to
a Gateway?
You can currently connect up to 24 Twinguards
to a Gateway.
How can I reset the gateway to
the factory settings?
To restore the factory default, press the
embedded System button on the bottom of your
gateway with a pointed object for about five
seconds. While pressing the button, the third
LED flashes yellow. The gateway then restarts.
Will data be lost if the gateway
is reset to factory settings?
All gateway-relevant information about the
existing radio network is deleted. The radio
connection to the connected Twinguards and
the information about the connected
Smartphone are also deleted.
How are updates made to the
gateway?
Information about new updates can be found in
your Twinguard App under "Settings -> Service
-> Software Updates". A notification appears on
your App Homescreen for important software
updates. To update, simply follow the
instructions in the app.
How do I install the gateway?
The Twinguard Gateway can be installed in just
a few simple steps. All you need is the Bosch
Twinguard App and the accessories included in
the starter set packaging. After starting the
Bosch Twinguard App, it guides you through
the individual installation steps. The easiest
way is to take a look at the step-by-step
instructions here in our installation video or
download the user manual as a PDF file.
How can I connect additional
Twinguards to my Gateway?
After installing the first Twinguard, you will be
asked if you want to install another Twinguard.
Simply follow the instructions in the app.
Alternatively, you can integrate further
Twinguards at a later time via the app. Please
follow the instructions under "Menu -> Room
information -> Add new Twinguard".
Where in my home do I place
my gateway?
To ensure optimum radio contact with your
Twinguards, place your gateway as centrally as
possible in your home. The range of your
gateway varies depending on the type of
building, outside buildings on at least 100 m

outdoor area and inside buildings typically up to
the next floor. Zigbee radio connections have a
very similar range to WLAN, typically 15 meters
per floor. You should position your gateway as
far away from the WLAN router as possible to
ensure optimum radio connections to your
Twinguard. You can ensure this e.g. by using
the maximum distance of the supplied Ethernet
cable from the WLAN router to the gateway
(max. 1 meter). Alternatively you can increase
the distance even further by using e.g.
Powerline Communication Adapters (Ethernet
via home power network) or WLAN Repeaters
with Ethernet connection in your home, via
which you can also connect your gateway to
your router and thus integrate it into your home
network.
What is the range between
gateway and Twinguard?
The wireless range of the Twinguard Eco
system is very similar to the W-LAN signal of
your router. This typically reaches the next floor
within the house or outside a building (open-air
section) up to 100m. This can vary due to
local/structural conditions. Among other things,
reinforced concrete ceilings or underfloor
heating can impair the radio signal. Please
make sure that your gateway is positioned as
centrally as possible in your household.
According to which standards
is the Bosch Smart Home
Twinguard certified?
The Bosch Smart Home Twinguard is certified
according to the European standard EN
14604:2005 + AC:2008 and is therefore a
reliable lifesaver in your home.
What is the difference between
smoke alarms with Dual-Ray
technology and conventional
smoke alarms?
Smoke detectors with Dual-Ray technology
reliably protect thousands of industrial buildings
such as shopping centres, office complexes or
airports worldwide every day. The high-
precision technology reliably detects even the
smallest smoke particles. Dual-Ray technology
works with two LEDs in the blue and infrared
range. The result is highly reliable fire detection
with the lowest possible number of false
alarms.
Dual-Ray technology has an ISP algorithm (ISP
= Intelligent Signaling Processing) based on
Bosch's decades of experience in the field of
professional fire detection.
Is there a smoke alarm
obligation in my federal state?
All German federal states have a smoke alarm
obligation, which will be implemented

nationwide by 2020 at the latest. Detailed
information on the regulations in the individual
federal states can be found here. In Austria
there are regulations for new buildings,
conversions and existing buildings in almost all
federal provinces. Often these regulations even
apply to all common rooms in your home.
Why should I use a smoke
detector?
In case of doubt, a smoke alarm can save lives.
In Germany alone, there are about 6,000
serious burns every year. Approximately 80% of
all fire accidents occur in private homes. About
70% of affected burn victims are surprised
during sleep at night. A smoke alarm detects
and reports fire hazards at an early stage and
can thus prevent accidents and injuries.
What is the advantage of the
automated call?
No. The fire department is not called directly by
the Bosch Smart Home Twinguard. A call to the
fire brigade must always be made manually via
you. You can call the fire department directly
from the app in the event of a fire. The valid
emergency number for the respective country
selection is automatically stored.
What is the heartbeat
function?
Your Bosch Smart Home Twinguard
continuously carries out a self-diagnosis, if
something is wrong, you will be informed. The
Twinguard virtually checks its own heartbeat -
so you can always be sure that your Twinguard
smoke detector is working reliably. Up to three
times a day, from 19:00 to 01:00 the following
day, you can also see this "Hearbeat". This is
indicated by a blue light pattern on the
surrounding LED strip. A brightness sensor
activates the heartbeat at a defined light
transition from light to dark. If, for example, you
switch off the light in a room when leaving the
room or before falling asleep, your Twinguard
will show you that it continues to pay attention.
If a visual heartbeat has been performed on the
detector, the next visual heartbeat will be
performed on the detector no earlier than one
hour later and no more than three times a day.
You can also deactivate this visual function via
the Bosch Twinguard App. Don't worry, the self-
diagnosis will continue.
What does the pre-alarm
function mean?
The pre-alarm can be used to draw your
attention to an incipient fire by means of a
signal with reduced volume. It supports you in
taking early measures to eliminate the cause of
the pre-alarm and thus avoid a main alarm as

far as possible. In the event of a pre-alarm, no
automated call is made. You can also
deactivate this function via the Bosch
Twinguard App.
What does the night
mode function mean?
The Twinguard has the night mode function.
Here, non-urgent information such as an
incipient battery warning is postponed to the
next day. Thus, the detector does not disturb
you unnecessarily at night with a battery
warning that can be postponed to the daytime
hours. Don't worry, the battery still has enough
power at this time to move the warning without
hesitation. In addition, your Bosch Twinguard
App informs you about the imminent battery
change. So you have enough time to buy new
batteries in time.
The night mode is active from 20:00 to 08:00 on
the following day.
How long is the battery life?
The Twinguard App clearly displays the battery
status of all detectors. This can be found in the
menu -> Rooms. The typical battery life is two
years.
If the battery capacity of a detector drops below
a critical level, you will also receive a push
message and a red info bar will appear on your
Home screen. This info bar is not hidden until
the battery has been replaced.
Information about the test
alarm
With the Twinguard, you can carry out a test
alarm conventionally via the control button on
the detector or via the app. In this case, the
alarm is always performed at a reduced volume
for only one Twinguard. If the test result is
positive, a blue light is displayed on the rotating
LED strip for about one second.
We recommend to carry out monthly test
alarms. If the test alarm via the app is not
successful, please perform a test alarm on the
detector manually using the control button. If
this is also not successful, please contact our
customer service immediately.
It may be necessary to replace the device
immediately. Please note that a test alarm can
only be triggered via the Twinguard App if you
are in the same W-Lan network with your
smartphone that your Twinguard is connected

to. Another note: After a test alarm has been
executed, the detector is muted for 10 minutes
and indicates this by the flashing of the red
LED. You can therefore use this function
proactively if you suspect an imminent false
alarm, e.g. if you expect a lot of smoke or water
vapour in the kitchen while cooking. The
EN14604 standard, which applies to smoke
detectors, is based on one test alarm per week
What is the advantage of the
different sensitivities
depending on where I installed
the Twinguard?
During commissioning, your Twinguard is
always assigned the optimum sensitivity for a
room. The Twinguard has three different
sensitivity levels (low, medium, high) which are
automatically adjusted according to the
selected room.
For example, a bedroom or children's room has
a very high sensitivity, which reports a fire
quickly and reliably in the event of a fire.
Similarly, a kitchen is assigned a lower
sensitivity, since many disturbance variables
can occur here, e.g. due to cooking (water
vapour).
Can the Bosch Smart Home
Twinguard also be used as a
carbon monoxide warning
device?
At present, the Bosch Smart Home Twinguard
can only be used as a smoke detector and for
air quality measurement, but not as a carbon
monoxide detector. The current range of
functions does not include so-called fire gas
detection.
How is air quality measured?
The Bosch Smart Home Twinguard
continuously measures air quality.
Temperature, relative humidity and air purity
(detection of volatile organic compounds) are
taken into account. Put simply, volatile organic
compounds (VOCs) are things that you can
perceive with your sense of smell.
How does the Bosch Smart
Home Twinguard calculate
optimum air quality?
A specially developed algorithm analyzes the
measured individual parameters and interprets
them optically as corresponding leaf symbolism
for the room in question. The Twinguard App
has an optimal air quality range for different
room types, e.g. bedrooms, based on scientific
studies. These are used as references.
Why is my air quality data
stored?
Your air quality data is stored in the backend of
your user account in the Bosch Cloud so you
can access it anytime, anywhere. With the help
of your air quality history, you can derive
patterns for the future to ensure a healthy
indoor climate in advance.

What happens if the optimum
range is exceeded or not
reached?
The Twinguard App notifies you and gives you
recommendations if the air quality in a room is
outside the optimum range. These notifications
can be activated and deactivated. These are
deactivated in the factory setting. The
notification intervals can also be adjusted
manually.
Where can I get further
information on air quality?
More detailed information about air quality
including some tips & tricks can be found
here