Tech Controllers EU-T-4.1 User manual

USER MANUAL
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EU-T-4.1
EU-T-4.2

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TABLE OF CONTENTS
I. Safety ............................................................................................................................................................................3
II. Device description.................................................................................................................................................... 4
III. How to install the controller .................................................................................................................................... 4
1. EU-T-4.1 connection diagram................................................................................................................................... 6
2. EU-T-4.2 connection diagram................................................................................................................................... 7
IV. EU-MW-2 receiver.................................................................................................................................................... 7
V. External temperature sensor........................................................................................................................................ 8
VI. First start-up............................................................................................................................................................. 9
VII. How to use the regulator ......................................................................................................................................... 9
1. Principle of operation............................................................................................................................................... 9
2. Operation modes...................................................................................................................................................... 9
3. Main screen view and description.......................................................................................................................... 11
4. Controller functions................................................................................................................................................ 13
4.1. Main menu .................................................................................................................................................... 13
4.2. Day of the week.............................................................................................................................................13
4.3. Clock .............................................................................................................................................................. 14
4.4. Day from... .....................................................................................................................................................14
4.5. Night from... .................................................................................................................................................. 14
4.6. Optimum start ...............................................................................................................................................14
4.7. Service menu .................................................................................................................................................15
4.8. Weekly program ............................................................................................................................................15
4.9. Pre-set comfort temperature ........................................................................................................................ 17
4.10. Pre-set economical temperature .............................................................................................................. 17
4.11. Pre-set temperature hysteresis.................................................................................................................17
4.12. Temperature sensor calibration................................................................................................................17
VIII. Technical data .................................................................................................................................................... 18
JG. 2021.05.28
The pictures and diagrams are for illustration purposes only.
The manufacturer reserves the right to introduce some changes.

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I. SAFETY
Before using the device for the first time the user should read the following regulations carefully. Not obeying the rules
included in this manual may lead to personal injuries or controller damage. The user’s manual should be stored in a safe
place for further reference.
In order to avoid accidents and errors it should be ensured that every person using the device has familiarized themselves
with the principle of operation as well as security functions of the controller. If the device is to be sold or put in a different
place, make sure that the user’s manual is stored with the device so that any potential user has access to essential
information about the device.
The manufacturer does not accept responsibility for any injuries or damage resulting from negligence; therefore, users
are obliged to take the necessary safety measures listed in this manual to protect their lives and property.
WARNING
A live electrical device! Make sure the regulator is disconnected from the mains before performing any
activities involving the power supply (plugging cables, installing the device etc.)
The device should be installed by a qualified electrician.
The device should not be operated by children.
WARNING
The device may be damaged if struck by a lightning. Make sure the plug is disconnected from the power
supply during a thunderstorm.
Any use other than specified by the manufacturer is forbidden.
The device should be periodically checked.
Changes in the merchandise described in the manual may have been introduced subsequent to its completion on
28.05.2021. The manufacturer retains the right to introduce changes to the structure or colours. The illustrations may
include additional equipment. Print technology may result in differences in the colours shown.
We are committed to protecting the environment. Manufacturing electronic devices imposes an
obligation of providing for environmentally safe disposal of used electronic components and
devices. Hence, we have been entered into a register kept by the Inspection for Environmental
Protection. The crossed-out bin symbol on a product means that the product may not be
disposed of to household waste containers. Recycling of waste helps to protect the environment.
The user is obliged to transfer their used equipment to a collection point where all electric and
electronic components will be recycled.

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II. DEVICE DESCRIPTION
The EU-T-4.1/EU-T-4.2 room regulator is intended for controlling the heating device (e.g. gas, oil or electric boiler or the
boiler controller).
Its main task is to maintain the pre-set temperature in the flat by sending a signal to the heating/cooling device (contact
opening) when the desired temperature is reached.
Advanced software enables the regulator to fulfil a wide range of functions:
maintaining the pre-set room temperature
manual mode
day/night program
weekly control
Optimum Start
heating/cooling
Controller equipment:
front panel made of glass
built-in temperature sensor
batteries
III. HOW TO INSTALL THE CONTROLLER
The controller should be installed by a qualified electrician.
A –134 mm
B –94 mm
C –24 mm

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The EU-T-4.1/EU-T-4.2 regulator may be put in any place (1) or used as a wall-mountable panel (2).
1) The regulator may be supported with a stand which should be attached to the back cover.
2) In order to hang the regulator on the wall, remove the stand carefully.

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In order to insert batteries, remove the back cover.
1. EU-T-4.1 CONNECTION DIAGRAM
The room regulator should be connected to the heating device or the CH boiler controller with the use of a two-core
cable. The diagram below illustrates how to connect the devices.

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2. EU-T-4.2 CONNECTION DIAGRAM
In the case of wireless connection, use the above diagrams - a two-core communication cable should be connected to
appropriate ports in the receiver.
IV. EU-MW-2 RECEIVER
The EU-T-4.2 regulator communicates with the heating device (or the CH boiler controller) by means of a radio signal sent
to the EU-MW-2 receiver. Such a receiver is connected to the heating device (or the CH boiler controller) by means of a
two-core cable, and communicates with the room regulator using a radio signal.
The receiver has three control lights:
• red control light 1 –it signalises data reception and goes on during channel change;
• red control light 2 –indicates receiver operation;
• red control light 3 –goes on when the room temperature fails to reach the pre-set value –the heating device is
switched on
registration/channel change button
red control light 1
red control light 2
red control light 3

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NOTE
In case of no communication (e.g. due to discharged battery), the receiver automatically disables the heating
device after 15 minutes.
How to change the communication channel:
Channel 35 is the default communication channel in the room regulator. The channel may be easily changed (if the current
channel is used by other devices). To change the channel, press and hold the channel change button on the receiver for
about 10 seconds until the red control light 1 goes on. Next, change the communication channel in the room regulator
following the procedure described in the section: Controller functions. The red control light 1 on the receiver should go
off.
V. EXTERNAL TEMPERATURE SENSOR
The EU-T-4.2 room regulator may optionally be equipped with an external temperature sensor. The sensor should be
mounted in a shaded place so that it is not affected by the weather conditions. The current temperature reading will be
sent to the room regulator every few minutes and it will be displayed on the main screen.
The external sensor communicates with the room regulator via radio signal. Both the room regulator and the external
sensor are pre-configured to operate on channel 35, but the user may easily change the channel (if the current channel
is used by other devices).
How to change the communication channel:
In order to change the channel, press and hold the channel change button. When the control light on the sensor flashes,
the process of channel change has been initiated. Keep holding the button and wait until the light starts flashing again.
The number of flashes corresponds to the first digit of the desired channel number.
Release the button after the desired number of flashes and press it again to set the second digit of the channel number –
the control light flashes quickly twice. Hold the button and wait until the light flashes the desired number of times. When
the button is released, the control light flashes twice –the new communication channel has been set.
NOTE: In case of a one-digit channel number (channels 0÷9) set 0 as the first digit.
Example 1:
28 is the desired communication channel. In order to select this channel, set the first digit - 2, and the second digit –8.
Press and hold the channel change button - the control light flashes quickly once - the process of channel change has been
initiated. Keep holding the button and wait until the light flashes two more times (the first digit of the channel number –
28).
Release the button and press it again –the control light flashes quickly twice –the process of setting the second digit has
been initiated. Keep holding the button and wait until the light flashes 8 times.
When the button is released, the control light flashes quickly twice –the new communication channel has been
successfully set.
Example 2:
7 is the desired communication channel. In order to select this channel, set the first digit - 0, and the second digit –7.
Press and hold the channel change button - the control light flashes quickly once - the process of channel change has been
initiated. As the first digit is 0, release the button before the control light flashes again.
Press the button again –the control light flashes quickly twice –the process of setting the second digit has been initiated.
Keep holding the button and wait until the light flashes 7 times (the second digit of the desired number).
Control light
Communication
button

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When the button is released, the control light flashes quickly twice –the new communication channel has been
successfully set.
In case of errors in the channel change process, the control light goes on for about 2 seconds. In such a case the channel
will not be changed.
VI. FIRST START-UP
In order for the regulator to operate correctly, follow these steps when starting the device for the first time:
1. Insert the batteries - in order to do it, remove the back cover.
2. Connect the two-core cable to appropriate sockets in the regulator or the receiver.
3. In the case of EU-T-4.2. check if the current communication channel selected in the regulator is the same as in the
receiver. 35 is the default communication channel in all devices.
If there is a conflict with other devices using radio communication, it is necessary to select a different channel.
VII. HOW TO USE THE REGULATOR
1. PRINCIPLE OF OPERATION
The EU-T-4.1/EU-T-4.2 room regulator is designed to maintain the pre-set room temperature by sending a signal to the
heating device (contact opening) when the pre- set room temperature has been reached. After receiving such a signal,
the heating device is disabled (if it is connected to a CH boiler controller, the CH boiler switches to sustain mode after
receiving the signal).
2. OPERATION MODES
The room regulator may operate in one of the following operation modes:
Day/night mode
In this mode the pre-set temperature value depends on the current time of the day. The user may set different
temperature values for the daytime and nighttime (comfort temperature and economical temperature) as well as define
the exact time of entering day mode and night mode.
In order to activate this mode, press one of the buttons until day/night mode icon appears on the main screen.
Weekly control
This mode enables the user to define the time when the pre-set comfort temperature and the pre-set economical
temperature will apply. The user may set 9 different programs divided into three groups:
- PROGRAMS 1÷3 –daily temperature values are set for all days of the week;
- PROGRAMS 4÷6 –daily temperature values are set separately for the weekdays (Monday-Friday) and for the
weekend (Saturday-Sunday);
- PROGRAMS 7÷9 –daily temperature values are set for each day of the week separately.
Day/night mode icon

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* The display shows the hours when the comfort temperature applies. In the remaining time period economical
temperature applies.
In order to activate this mode, press one of the buttons until a weekly control icon appears on the main screen.
Manual mode
In this mode the pre-set temperature is adjusted manually from the main screen view with the use of plus/minus buttons
(+ - ). Manual mode is activated automatically when one of these buttons is pressed. Once the manual mode is activated,
the previous operation mode enters sleep mode until the next pre-programmed temperature change. Manual mode may
be deactivated by pressing one of these buttons:
Example 1 –manual mode activation in Day/night mode
When Day/night mode is active, the user changes the pre-set temperature by pressing plus/minus button (+ - ),
which automatically activates manual mode. The controller returns to Day/night mode when daytime changes into
.
nighttime (or the other way round) or when the user presses one of the buttons:
Example 2 - manual mode activation in Weekly control mode
When Weekly control mode is active, the user changes the pre-set temperature by pressing plus/minus button (+ - ),
which automatically activates manual mode. The controller returns to Weekly control mode when, according to the
weekly schedule, daytime changes into nighttime (or the other way round) or when the user presses one of the button
Weekly control icon
Number of the current
weekly control program
Parameters of the current
weekly control program*
manual mode icon
weekly control icon
manual mode icon
day/night mode icon

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3. MAIN SCREEN VIEW AND DESCRIPTION
The user operates the device using buttons. While one parameter is being edited, the remaining icons are not displayed..
1. Display
2. - in the main screen view, use this button to activate weekly control mode. In the controller menu, use this
button to switch between functions.
3. Minus button (-) –in the main screen view - press this button to switch to manual mode and decrease the pre-
set temperature value. In the controller menu, use this button to change parameter settings, enter the service
code etc.
4. MENU –hold this button to enter the controller menu. While editing parameters, press and hold this button to
confirm the changes and return to the main screen view.
5. Plus button (+) –in the main screen view - press this button to switch to manual mode and increase the pre-set
temperature value. In the controller menu, use this button to change parameter settings, enter the service code
etc.
6. - in the main screen view, use this button to activate day/night mode. In the controller menu, use this button
to switch between functions.
2
1
3
4
5
6

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1. Day of the week
2. An icon informing about current economical temperature (resulting from weekly control or day/night mode
settings).
3. An icon informing about current comfort temperature (resulting from weekly control or day/night mode
settings).
4. Outside temperature –in the case of wireless version (EU-T-4.2), after an external temperature sensor has
been registered.
5. Pre-set room temperature
6. Time
7. Buttery level
8. An icon informing about room cooling/heating. The animation differs depending on the selected operation
mode:
Heating mode –the icon flashes when the pre-set temperature has not been reached; it is steady when the
pre-set temperature has been reached.
Cooling mode –the icon rotates when the temperature is above the pre-set value; it is steady when the pre-
set temperature has been reached.
9. Current operation mode:
a. Weekly
b. Manual
c. Day/night
10. Current room temperature
11. Parameter icons (see: a table below)
1
4
11
5
6
7
8
9
10
11
2
3

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Parameter icons:
Clock settings
Weekly control settings
Day from…
Comfort temperature
Night from…
Economical temperature
Channel selection
Hysteresis
Optimum start / heating/cooling mode
selection (in service menu)
Temperature sensor calibration
Service menu
4. CONTROLLER FUNCTIONS
The user navigates the menu structure using all the buttons. In order to edit particular parameters, press and hold MENU.
Next, press to view the controller functions –the edited parameter is flashing whereas the remaining parameters are
not displayed. Use plus and minus buttons (+ -) to change the parameter settings. Press to confirm the changes and
move on to edit the next parameter or press and to confirm the changes and return to the previous parameter or
press and hold MENU to confirm and return to the main screen view - apart from editing weekly control settings and
channel selection.
4.1. MAIN MENU
4.2. DAY OF THE WEEK
After entering the main menu, all icons which are not connected with the parameter
which is being edited are not displayed. The first parameter is day of the week.
Press +or -until the current day of the week appears on the screen. Press to
confirm and move on to the next parameter or press and hold MENU to confirm and
return to the main screen view.
MENU
Day of the week
Clock
Day from...
Night from...
Optimum start
Service menu
Weekly program
Pre-set comfort temperature
Pre-set economical temperature
Hysteresis
Calibration

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4.3. CLOCK
In order to set current time, enter the menu and press or until time setting
screen appears on the screen.
By pressing + or - set the hour and minutes. Press to confirm.
Press to confirm and move on to the next parameter or press and hold MENU to
confirm and return to the main screen view.
4.4. DAY FROM...
This function enables the user to define the exact time of entering the day mode.
When Day/night mode is active, comfort temperature applies at daytime.
To configure this parameter press or until Day from… setting screen appears.
By pressing + or - set the hour and minute of day mode activation.
Press to confirm and move on to the next parameter or press and hold MENU to
confirm and return to the main screen view.
4.5. NIGHT FROM...
This function enables the user to define the exact time of entering the night mode.
When Day/night mode is active, economical temperature applies at nighttime.
To configure this parameter press or until Night from… setting screen appears.
By pressing + or - set the hour and minute of night mode activation.
Press to confirm and move on to the next parameter or press and hold MENU to
confirm and return to the main screen view.
4.6. OPTIMUM START
Optimum start is an intelligent system controlling the heating/cooling process. It involves constant monitoring of the
heating/cooling system efficiency and using the information to activate the heating/cooling process in advance in order
to reach the pre-set temperatures.
The system requires no user intervention. It precisely reacts to any changes that affect the efficiency of the
heating system. If, for example, some changes have been introduced to the heating system and the house heats up faster
than before, the Optimum start system will recognize the changes at the next pre-programmed temperature change (from
comfort to economical) and in the next cycle the heating system activation will be adequately delayed, reducing the time
needed to reach the desired temperature.
A–pre-programmed change from economical temperature to comfort temperature
Activating this function means that at the time of pre-programmed change of the pre-set temperature from comfort to
economical or the other way round, the current room temperature is close to the desired value.
Room temperature -
OPTIMUM START switched on:
Room temperature -
OPTIMUM START switched off:

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In order to configure this parameter, press one of the buttons until Optimum
start setting panel appears on the screen.
Use +or -to activate or deactivate Optimum start function (ON/OFF). Press to
confirm and move on to edit the next parameter or press and hold MENU to confirm
and return to the main screen view
4.7. SERVICE MENU
Certain functions in the controller service menu are secured with a code. In order to
adjust their parameters, one of the buttons until Service menu settings appear
on the screen.
To view the service menu it is necessary to enter the code –215. Use + or –to select
the first digit (2) and press MENU to confirm. Follow the same steps selecting the
remaining two digits.
Heating/cooling mode
This function enables the user to select the room regulator operation mode:
controlling the cooling system
controlling the heating system
Press + or - to select desired type of system. Press to confirm and move on to edit another parameter in the service
menu or press and hold MENU to confirm to return to the main screen view.
Channel selection (option available only for EU-T-4.2)
The EU-T-4.2 regulator communicates with the heating device or the CH boiler
controller via a receiver using a radio signal. For the communication to take place it is
necessary to select the same channel in both the controller and the receiver (and also
in the external sensor if it is used). Channel 35 is the default communication channel
in all devices. The channel should be changed only if the current channel is used by
other devices.
In order to change, press one of the buttons until the channel change screen appears on the screen. Use + and –
to select the channel. Press to confirm and move on to the next parameter or press and hold MENU to confirm and
return to the main screen view.
4.8. WEEKLY PROGRAM
This function is used to change the current weekly control program and edit the weekly programs.
How to change weekly program number
When weekly control is enabled (see: VII.2. Operation modes) the current program is
activated. In order to select the current program number, enter the menu and press
one of the buttons or until weekly program setting screen opens up.
By pressing and holding MENU button the user opens up the program selection
screen. Each time the user holds the MENU button, the program number changes.
When the desired number appears on the screen, press MENU –the controller returns
to the main screen view and the selected program number is set.
weekly program number

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How to configure particular weekly programs
Weekly program allows the user to define the time when comfort temperature and
economical temperature will apply. Depending on the program number, the user may
set daily temperature values for all days of the week (programs 1÷3), for weekdays and
the weekend separately (programs 4÷6) and for each day of the week separately
(programs 7÷9).
In order to select the current program number, enter the menu and press one of the
buttons or until weekly program setting screen opens up.
STEP 1 - CHOOSE THE PROGRAM TO BE EDITED
By pressing and holding MENU button the user opens up the program editing screen. Each time the user holds the MENU
button, the program number changes. When the desired number appears on the screen, the user may start editing its
parameters.
STEP 2 - SELECT DAYS OF THE WEEK
If the user wants to edit programs 1÷3, there is no possibility of selecting particular days
of the week as the setting applies to each day.
If the user wants to edit programs 4÷6 , it is possible to edit the settings for weekdays and the weekend separately. Press
buttons or briefly in order to select.
If the user wants to edit programs 7÷9, it is possible to edit the settings for each day separately. Press buttons or
briefly in order to select a day.
In order to choose the days when a given program should apply, use of the buttons .
STEP 3 - ASSIGNING COMFORT OR ECONOMICAL TEMPERATURE TO PARTICULAR HOURS
An hour which is being edited is displayed on the controller screen. In order to assign
comfort temperature, press the plus button (+). In order to select economical
temperature, press the minus button (-).
The parameters of the weekly program are displayed at the bottom of the screen: hours
to which comfort temperature has been assigned are displayed whereas hours
to which economical temperature has been assigned are not displayed.
Example:
The following screenshot presents daily settings of
program no. 7 for Monday
24⁰⁰-01⁵⁹- economical temperature
02⁰⁰-06⁵⁹- comfort temperature
07⁰⁰-14⁵⁹- economical temperature
15⁰⁰-21⁵⁹- comfort temperature
22⁰⁰-00⁵⁹- economical temperature
NOTE
When the user finishes the editing process by pressing MENU button, the
controller returns to the main screen view and this program is selected as the
current program.
weekly program number
editing weekdays
parameters
editing parameters for
Monday
edited hour

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4.9. PRE-SET COMFORT TEMPERATURE
Pre-set comfort temperature is used in weekly control mode and day/night mode.
Press one of the buttons until the comfort temperature change screen appears
on the screen.
Press + or - to set the desired temperature.
Press to confirm and move on to the next parameter or press and hold MENU to
confirm and return to the main screen view.
4.10. PRE-SET ECONOMICAL TEMPERATURE
Pre-set economical temperature is used in weekly control mode and day/night mode.
Press one of the buttons until the economical temperature change screen
appears on the screen.
Press + or - to set the desired temperature.
Press to confirm and move on to the next parameter or press and hold MENU to
confirm and return to the main screen view.
4.11. PRE-SET TEMPERATURE HYSTERESIS
Room temperature hysteresis defines the tolerance of the pre-set temperature at
which cooling or heating is activated (within the range of 0,2 ÷ 4°).
In order to set the hysteresis, press one of the buttons until the hysteresis
settings appear on the screen.
Use +or -to set the desired hysteresis value. Press to confirm and move on to the
next parameter or press and hold MENU to confirm and return to the main screen
view.
Example:
Pre-set temperature : 23°C
Hysteresis : 1°C
The room regulator reports that the temperature is too low only when the room temperature drops to 22 °C.
4.12. TEMPERATURE SENSOR CALIBRATION
It is performed when mounting the regulator or after it has been used for a long time,
if the room temperature measured by the internal sensor differs from the actual
temperature. Calibration setting range is from -10°C to +10°C with the accuracy of
0,1°C.
Press one of the buttons until the sensor calibration panel appears on the
screen. Use +and –to define correction. Press to confirm and move on to edit the
next parameter or press and hold MENU to confirm and return to the main screen
view.

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VIII. TECHNICAL DATA
EU-T-4.1
EU-T-4.2
Power supply
2xAA, 1,5V batteries
2xAA, 1,5V batteries
Room temp. adjustment range
5°C ÷ 35°C
5°C ÷ 35°C
Potential-free cont. nom. out. load
230V AC / 0,5A (AC1) *
24V DC / 0,5A (DC1) **
-
Measurement error
± 0,5
± 0,5
Operation frequency
-
868MHz
EU-MW-2 (EU-T-4.2)
Power supply
230V ± 10% / 50Hz
Operation temperature
5°C ÷ 50°C
Maximum power consumption
<1W
Potential-free cont. nom. out. load
230V AC / 0,5A (AC1) *
24V DC / 0,5A (DC1) **
Operation frequency
868MHz
Max. transmission power
25mW
* AC1 load category: single-phase, resistive or slightly inductive AC load.
** DC1 load category: direct current, resistive or slightly inductive load.

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EU declaration of conformity
Hereby, we declare under our sole responsibility that EU-T-4.1 manufactured by TECH STEROWNIKI, head-quartered in
Wieprz Biała Droga 31, 34-122 Wieprz, is compliant with Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonisation of the laws of Member States relating to the making available on the
market of electrical equipment designed for use within certain voltage limits (EU OJ L 96, of 29.03.2014, p. 357), Directive
2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of
Member States relating to electromagnetic compatibility (EU OJ L 96 of 29.03.2014, p.79), Directive 2009/125/EC
establishing a framework for the setting of ecodesign requirements for energy-related products as well as the regulation by
the MINISTRY OF ENTREPRENEURSHIP AND TECHNOLOGY of 24 June 2019 amending the regulation concerning the essential
requirements as regards the restriction of the use of certain hazardous substances in electrical and electronic equipment,
implementing provisions of Directive (EU) 2017/2102 of the European Parliament and of the Council of 15 November 2017
amending Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic
equipment (OJ L 305, 21.11.2017, p. 8).
For compliance assessment, harmonized standards were used:
PN-EN IEC 60730-2-9:2019-06, PN-EN 60730-1:2016-10.
UE declaration of conformity
Hereby, we declare under our sole responsibility that EU-T-4.2 manufactured by TECH STEROWNIKI, head-quartered in
Wieprz Biała Droga 31, 34-122 Wieprz, is compliant with Directive 2014/53/EU of the European parliament and of the
Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the
market of radio equipment, Directive 2009/125/EC establishing a framework for the setting of ecodesign requirements for
energy-related products as well as the regulation by the MINISTRY OF ENTREPRENEURSHIP AND TECHNOLOGY of 24 June
2019 amending the regulation concerning the essential requirements as regards the restriction of the use of certain
hazardous substances in electrical and electronic equipment, implementing provisions of Directive (EU) 2017/2102 of the
European Parliament and of the Council of 15 November 2017 amending Directive 2011/65/EU on the restriction of the use
of certain hazardous substances in electrical and electronic equipment (OJ L 305, 21.11.2017, p. 8).
For compliance assessment, harmonized standards were used:
PN-EN IEC 60730-2-9 :2019-06 art. 3.1a Safety of use
PN-EN 62479:2011 art. 3.1 a Safety of use
ETSI EN 301 489-1 V2.2.3 (2019-11) art.3.1b Electromagnetic compatibility
ETSI EN 301 489-3 V2.1.1:2019-03 art.3.1 b Electromagnetic compatibility
ETSI EN 300 220-2 V3.2.1 (2018-06) art.3.2 Effective and coherent use of radio spectrum
ETSI EN 300 220-1 V3.1.1 (2017-02) art.3.2 Effective and coherent use of radio spectrum
Wieprz, 28.05.2021

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