EnOcean Easyfit ETHSA User manual

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 1/27
Patent protected:
WO98/36395, DE 100 25 561, DE 101 50 128,
WO 2004/051591, DE 103 01 678 A1, DE 10309334,
WO 04/109236, WO 05/096482, WO 02/095707,
US 6,747,573, US 7,019,241
Observe precautions! Electrostatic sensitive devices!
ETHSA / ETHSU
EnOcean Temperature and Humidity Sensor
(Stepcode DE and later)

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 2/27
REVISION HISTORY
The following major modifications and improvements have been made to this document:
Version
Author
Reviewer
Date
Major Changes
1.0
MKA
MKA
22.12.2017
First release (902 MHz Version)
1.1
AA
MKA
26.02.2018
Several additions: 868 MHz version, enhanced
security feature, packaging info, outline draw-
ings, application info, etc...
1.2
AA
AA
28.05.2018
Chapter 4.3 added (Installing Supplemental
Battery)
2.0
AA
AA
04.01.2019
Additional supplied Wall Mounting Plate added
(in chapters 2.1, 2.5, 2.6)
2.1
AA
AA
01.02.2019
Tray packaging added (chapter 2.4, new chap-
ter 2.7)
3.0
AA
MK
18.11.2019
New Step Code DE:
Update with long-term energy storage re-
placement, additional transport mode for
longer shelf storage & air cargo, optimized Se-
cure Mode. Adding information about QR Code.
Update of Regulatory Notes inclusive European
waste treatment.
3.1
MK
11.4.2022
UK market approval and UKCA added
Published by EnOcean GmbH, Kolpingring 18a, 82041 Oberhaching, Germany
www.enocean.com, [email protected], phone [phone]
© EnOcean GmbH, All Rights Reserved
Other trademarks and trade names are those of their respective owners.
Important!
This information describes the type of component and shall not be considered as assured
characteristics. No responsibility is assumed for possible omissions or inaccuracies. Circuitry
and specifications are subject to change without notice. For the latest product specifications,
refer to the EnOcean website: http://www.enocean.com.
As far as patents or other rights of third parties are concerned, liability is only assumed for
modules, not for the described applications, processes and circuits. EnOcean does not assume
responsibility for use of modules described and limits its liability to the replacement of mod-
ules determined to be defective due to workmanship. Devices or systems containing RF com-
ponents must meet the essential requirements of the local legal authorities. The modules
must not be used in any relation with equipment that supports, directly or indirectly, human
health or life or with applications that can result in danger for people, animals or real value.
Components of the modules are considered and should be disposed of as hazardous waste.
Local government regulations are to be observed. Packing: Please use the recycling operators
known to you.

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 3/27
TABLE OF CONTENT
1RELATED DOCUMENTS ...................................................................................4
1.1 Installation Instructions .................................................................................4
1.2 Range Planning .............................................................................................4
1.3 Radio Telegram Description ............................................................................4
1.4 STM 350 module inside ..................................................................................4
1.5 Declaration of Conformity...............................................................................4
2GENERAL DESCRIPTION .................................................................................5
2.1 Basic Functionality.........................................................................................5
2.2 Technical Data ..............................................................................................6
2.3 Environmental Conditions ...............................................................................7
2.4 Ordering Information .....................................................................................7
2.5 Physical Dimensions ......................................................................................7
2.6 Packaging Information –Single Unit Packaging .................................................9
2.7 Packaging Information –Tray Packaging ........................................................ 10
2.8 Device Label ............................................................................................... 11
3FUNCTIONAL DESCRIPTION.......................................................................... 12
3.1 Block Diagram ............................................................................................ 12
3.2 Measurement and Transmission Timing .......................................................... 12
3.3 Firmware Flow Chart.................................................................................... 13
3.4 Teach-in to Receiver Unit ............................................................................. 13
3.5 Commissioning and Mode Change.................................................................. 14
3.6 Radio Telegram Format, EEP......................................................................... 16
3.8 Storing the Rolling code counter.................................................................... 17
4Application Information ................................................................................ 18
4.1 General Installation Instructions.................................................................... 18
4.2 Lighting Conditions ...................................................................................... 18
4.3 Installing Supplemental Battery (optional)...................................................... 20
4.4 Transmission Range..................................................................................... 21
5REGULATORY NOTES ................................................................................... 23
5.1 ETHSA Market Approval for European Union (CE) ............................................ 23
5.2 ETHSA Market Approval for United Kingdom (UKCA) ........................................ 23
5.3 ETHSU Market Approval for US (FCC)............................................................. 24
5.4 ETHSU Market Approval for CA (ISED) ........................................................... 26

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 4/27
1RELATED DOCUMENTS
This document describes set-up and operation of the ETHSx unit. Related documents are as
follows:
1.1 Installation Instructions
The installation instructions are contained in the single-unit packaging box and can also be
found on the product website of EnOcean ETHSx.
1.2 Range Planning
We recommend following our application notes, in particular AN001 “EnOcean Wireless Sys-
tems - Installation Notes” (PDF) available as download at:
www.enocean.com/en/application-notes/
1.3 Radio Telegram Description
ETHSx transmits radio telegrams according to EnOcean Equipment Profile EEP A5-04-03
(temperature & humidity measurement value), EEP SIGNAL 0x06 (Energy Level Reporting)
and EEP SIGNAL 0x0E (Entering Transport Mode) as defined in the EnOcean Equipment Pro-
files specification:
www.enocean-alliance.org/eep/
If the device shall be operated in Secure Mode please refer to the EnOcean Security Specifi-
cation:
www.enocean.com/security-specification
1.4 STM 350 module inside
User Manuals of the electronic modules inside of the ETHSx unit:
868 MHz: www.enocean.com/en/products/enocean_modules/stm-350
902 MHz: www.enocean.com/en/products/enocean_modules_902mhz/stm-350u
1.5 Declaration of Conformity
The Declaration of Conformity can be found on the EnOcean ETHSx product webpage.

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 5/27
2GENERAL DESCRIPTION
This user manual specifies ETHSx units with Stepcode DE or later:
▪See chapter “2.8 Product Label and QR Code” to find out the module stepcode.
▪For a detailed description of product changes see Product Change Notification (PCN).
▪The user manual for older modules can be downloaded from the product website (V2.1).
2.1 Basic Functionality
ETHSx is a wireless and maintenance free temperature & hu-
midity sensor for EnOcean systems. It provides on-board a
calibrated temperature and humidity sensor. Powered by a
solar cell, it works absolutely maintenance-free. An integrated
energy store allows operation for several days in total dark-
ness. In dark surrounding, a battery can be retrofitted.
The small housing can easily be mounted to walls or furniture
using the included adhesive pad or using the included wall
plate.
Single unit pack only: With the included metal stand, the sen-
sor can be positioned on horizontal surfaces. One end cap can be replaced by the enclosed
triangle cap.
ETHSx periodically measures temperature and humidity of its environment. Significant
changes in readings are reported immediately. In addition, frequent updates (signs-of-life)
are provided at regular intervals. A teach-in telegram is triggered immediately using the LRN
button. ETHSx provides the option to use Enhanced Security mode with encrypted commu-
nication and Rolling Code
ETHSx Key Product Features
◼Fully autonomous operation under sufficient lighting with pre-installed solar cell
(Battery backup option for operation in dark surroundings)
◼Accessories included
-Wall mounting plate
-Double-sided adhesive
-Metal stand and triangle cap for freestanding operation (single unit pack only)
◼Small housing with
-Factory calibrated on-board temperature and humidity sensor
-Integrated energy storage and charging circuit
-Integrated LRN button and TX indicator LED
◼Enhanced Security feature

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 6/27
2.2 Technical Data
Primary power supply
Solar with indoor light, min. 50 lx
Auxiliary power supply
Option for backup battery (CR1225, not included)
Antenna
Internal helix antenna
Radio standard / frequency
ETHSA: EnOcean 868.300 MHz
ETHSU: EnOcean 902.875 MHz
Data rate / modulation type
125 kbps / ETHSA = ASK, ETHSU = FSK
Radiated Output Power
ETHSA = typ. +5dBm
ETHSU = typ. +99 dBμV/m
Temperature sensor performance
Measurement range: -20°C … +60 °C
Resolution: 0.1 K
Accuracy: ±0.5 K across entire range
Humidity sensor performance
Measurement range: 0 % … 100 % r.h.
Resolution: 0.4 % r.h.
Accuracy: ±4.5 % r.h. across entire range
±3.0 % r.h. between 20 … 80 % r.h.
Measurement cycle time
Once every 100s
Immediate transmission threshold
Change by >±0.5 K or >±3% rh versus last transmission
Sign-of-life transmission
Measurement data update once every 11-24 minutes
(by random)
Teach-in telegram trigger
Pushbutton behind hole inside housing
Teach-in telegram indicator
LED shining through housing
Start-up time with empty energy store
typ. < 2.5 min @ 400 lx, 22°C 1)
Sustain condition for battery free operation
min. 1200 lxh per day (22°C)
Fully charged condition
6400 lxh (22°C)
Operation time in total darkness
> 10 days
(energy storage fully charged, sign of live only, 22°C) 2)
Operation time with backup battery
5 years min. (total darkness, 22°C)
EnOcean module integrated
ETHSA: STM 350 for EU/UK with CE/UKCA
ETHSU: STM 350U for US/CA with FCC/ISED
EnOcean Equipment Profile (EEP)
A5-04-03
SIGNAL 0x06 (Energy Level Reporting)
SIGNAL 0x0E (Entering Transport Mode)
Note 1: Charging time from empty energy store until a teach-in telegram can be sent
Note 2: Operation time from a fully charged energy store if telegrams sent on average every
17.5 minutes (signs-of-life). To maintain the performance, please refer to chapter 2.3!

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 7/27
2.3 Environmental Conditions
Operating and Storage temperature Absolute Maximum: -20 °C … +60 °C
Recommended 1): +10 °C…+30 °C
Operating and storage humidity Maximum: 0% … 93% r.h., non-condensing
Recommended: < 60% r.h.
Shelf life (in absolute darkness) 36 months after delivery in transport mode 2)
Note 1: Recommended for maximum life of energy storage capacitor. The following effects will lead to
shorter dark time operation:
a) Long time exposure of the unit to temperatures higher 30°C will gradually degrade the en-
ergy storage performance over lifetime.
b) Lower temperatures than 10°C will noticeable reduce capacity of energy store, but tempo-
rarily only.
Note 2: Recharge energy storage after 36 months in total darkness. Deep discharge of the energy
storage leads to degradation of performance. Therefore, the device must be put into operation after 36
months in transport mode.
2.4 Ordering Information
Type
Ordering Code
Frequency
Packaging
ETHSA
S3001-C350
868.300MHz
Single Unit Packaging (chapter 2.6)
ETHSA
S3001-T350
868.300MHz
Tray Packaging (chapter 2.7)
ETHSU
S3051-C350
902.875MHz
Single Unit Packaging (chapter 2.6)
2.5 Physical Dimensions
Colour of unit White, similar to RAL 9010
Material of unit housing and mounting plate PC-ABS (housing), POM (mounting plate)
Dimensions of unit without mounting plate (no stand, 2 square caps) 76.2 x 22 x 15 mm
Dimensions of unit with mounting plate 79 x 23.8 x 18.6 mm
Dimensions of unit with stand and triangle cap (single pack only) 30 x 30 x 85±1 mm
mm
Dimensions of stand 30 x 30 x 1.2 mm (without slide-flap)
Dimensions of housing adhesive 50 x 18 x 0.8 mm

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 8/27
ETHSx Mechanical Outline (with 2 square caps, without stand)
ETHSx Mechanical Outline (with mounting plate)

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 9/27
ETHSx Mechanical Outline (with triangle cap and stand)
2.6 Packaging Information –Single Unit Packaging
Content of single unit box:
1. TH Sensor Unit (wireless sensor in housing)
2. Mounting Plate (for mounting the sensor onto a wall)
3. Adhesive Tape (double-sided, for easy gluing the sensor onto a smooth surface)
4. Metal Stand (fixed to unit, removable)
5. Triangle Cap (separate in a little plastic bag)
6. Installation Instructions
Weight of sensor unit (with 2 square caps, without stand) 20 g
Weight of single unit box (sensor unit, stand, mounting plate, packaging) 43 g
Size of single unit card box 32 x 32 x 99 mm
Minimum order quantity (transport packaging) 50 units
Dimensions of transport card box (50 single unit boxes) 232 x 176 x 174 mm
Weight of transport box (including 50 single unit boxes) 2.3 kg

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 10/27
Content of single unit box:
TH Sensor Unit, Adhesive, Stand, Mounting plate, Triangle Cap, Instructions
Transport packaging with 50 single unit boxes
2.7 Packaging Information –Tray Packaging
Card box with 7 plastic trays containing 8 sensor units each, plus 1 tub-tray for the acces-
sories.
Content:
1. 56 TH Sensor Units
2. Mounting Plates (preinstalled at reed contact units)
3. Adhesive Tapes (in separate tray)
4. Magnets with adhesive tape (in separate tray)
Minimum order quantity (transport packaging) 56 units
Dimensions of transport box (56 units) 232 x 176 x 174 mm
Weight of transport box (56 units) 2.2 kg

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 11/27
2.8 Device Label
The structure of the ETHSx device label is shown in following Figure:
Figure: Unit Label
2.8.1 Step Code
The Step Code describes the functional product status of the device and can be found on
the product label between the product ordering code and the unit’s serial number. In the
upper figure the step code is “DA”.
2.8.2 QR-Code
In order to improve logistic and commissioning of the sensor unit a QR code can be found
on the unit label. The QR code used in the new product label encodes the product parame-
ter according to the ANSI/MH10.8.2-2013 industry standard.
Figure: QR Code Example
The QR code shown in the example figure above encodes the following string:
„30S000001234567+30PS3001-C350+2PDA01+S01123456123456“
The following table shows the interpretation of the data therein:
Identifier
Length of data exclud-
ing identifier
Value
Comment
30S
12 characters
ID, Static Source Address
hex
30P
10 characters
Ordering Code
“S3001-C350”
2P
4 characters
Step code and revision
“DA-01”
S
14 characters
Serial Number
Table: QR Code content

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 12/27
3FUNCTIONAL DESCRIPTION
3.1 Block Diagram
Figure: Hardware block diagram (simplified)
3.2 Measurement and Transmission Timing
ETHSx wakes up approximately once every 100 seconds to measure temperature and hu-
midity. The measured values are then compared against the last reported (transmitted) val-
ues. If there is a significant change then the measured values are transmitted immediately.
Significant change is defined as follows:
◼Temperature: The measured temperature deviates from the last reported tempera-
ture by more than 0.5 K
◼Humidity: The measured humidity deviates from the last reported humidity by more
than 3% r.h.
In absence of a significant change, a heartbeat telegram reporting the currently measured
values is transmitted for every 7 to 14 measurements (affected at random). In addition,
ETHSx measures and reports the energy level of its internal energy storage element approx-
imately every 100 measurements. With each default transmission cycle, 3 identical sub-tel-
egrams are transmitted within 40ms. Transmission of a sub-telegram lasts approximately
1.2ms. The delay between the three transmission bursts is affected at random. This setup of
the transmission timing allows avoiding possible collisions with data packages of other
EnOcean transmitters as well as disturbances from the environment.

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 13/27
3.3 Firmware Flow Chart
Figure: Firmware flow chart (simplified)
3.4 Teach-in to Receiver Unit
Push the button behind the hole in the side wall to trigger a teach-in telegram. You will see

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 14/27
a LED shining at the housing side as telegram indicator (pay attention to sufficiently dark
environment).
Figure: Teach-in telegram trigger
When pressing the LRN key, the module sends a teach-in telegram to a suited receiver ac-
cording to the currently selected communication mode (4BS teach-in telegram for Standard
Mode, secure teach-in telegram for Security Mode). The teach-in telegram identifies the de-
vice manufacturer and the function and type of the device via the EEP used. For EASYFIT
devices, EnOcean is set as manufacturer with ID 0x00B.
3.5 Commissioning and Mode Change
The module is shipped in Transport Mode (Mode 3) to switch off the energy store for long
term shelf storage and air cargo. The mode can be changed by pressing the learn button.
Please note that the modes have been changed with Stepcode DE (and later). Make sure that
the solar cell will get enough light for mode change and/or learn telegram.
◼Change from Transport Mode to Standard Mode:
After pressing learn button 1x short (around 1s) the radio module will enter Standard
Mode (Mode 1). A standard learn telegram will be sent and the LED will flash 2x.
◼Change from Standard Mode to Secure Mode:
After pressing learn button 2x long (2x around 5s, pause <1s) the radio module will
enter Secure Mode (Mode 2). A secure learn telegram will be sent and the LED will
flash 2x.
◼Change from Secure or Standard Mode to Transport Mode:
After pressing learn button 1x long (around 5s) the radio module will enter Transport
Mode (Mode 3). A signal telegram will be sent and the LED will flash 3x.
The following diagram illustrates all implemented mode transitions:

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 15/27
Figure: Mode Transitions
The following pushbutton timing is implemented:
•Short press: around 1s (firmware 0.1 –3.0 s)
•Long press: around 5s (firmware 3 –7 s)
•2x long press with very short pause of max. 1 s between
Before changing the operating mode please make sure to clear the device from all
receivers which have been taught to work with this device before. Otherwise the
receiver will ignore the telegrams and the application will not work.
The flag for actual mode itself is stored in non-volatile memory. After power down
reset the previous selected mode is active. The mode change is limited to 50 times.
In normal application scenario only very few are required.

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 16/27
3.6 Radio Telegram Format, EEP
3.6.1 Standard Mode
ETHSx transmits a radio telegram according to EnOcean Equipment Profile EEP A5-04-03 as
defined in the EEP EnOcean Equipment Profiles specification:
www.enocean-alliance.org/eep/
3.6.2 Secure Mode and Secure Telegram
In Secure Mode the payload content of the telegram is protected with advanced security
features. Normal operation telegram payload and also Teach-in telegram payload both are
protected in the same way. The security features used are defined by the Security Level
format - SLF. This parameter is set by default to following values (Stepcode DE and later):
◼24-bit RLC which starts from 0 at production
◼RLC sent explicitly
◼3-byte CMAC
◼VAES encryption
The security features are added to the communication by encapsulating the payload and
Teach-in telegram payload into a secured telegram. The payload itself is not changed and
corresponds to the standard mode payload like defined by EEP D5-00-01. Please refer to the
EnOcean Security Specification for details:
http://www.enocean.com/en/security-specification/.
3.6.3 Secure Learn Telegram
In standard mode an 1BS teach-in telegram is transmitted by pressing the LRN button. To
process secured communication on a receiver the ETHSx has to send a security teach-in
telegram to the receiver and so inform him about the used security profile, AES key and
initial RLC counter. The security teach-in has to take place before any other communication
can be executed (profile teach-in included). Press the LRN button to trigger the transmission
of the teach-in telegram. The security teach-in and then the profile teach-in are transmitted.
The profile teach-in telegram is already protected by advanced security features. The process
of sending security teach-in telegram and profile teach-in telegram is triggered by pressing
the LRN button in secure mode, the behaviour of the LRN button is following:
1. Button is pressed
2. Security teach-in is send.
3. Profile teach-in is send.
For more information on the structure of the teach-in telegram please refer to chapter 4.2 of
the EnOcean Security Specification: www.enocean.com/security-specification

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 17/27
3.7 Radio Telegram Timing
The setup of the ETHSx transmission timing reliably avoids possible collisions with data pack-
ages of other EnOcean transmitters as well as disturbances from the environment.
3.7.1 Standard Mode Transmission Timing
In Standard Mode with each transmission cycle, 3 identical subtelegrams are transmitted
within 40 ms. Transmission of a subtelegram lasts approximately 0.9 ms. The delay between
the three transmission bursts is affected at random.
Figure: Transmission timing in Standard Mode
3.7.2 Secure Mode Transmission Timing
In Secure Mode the transmission cycle is reduced to 2 identical subtelegrams that are trans-
mitted within 20 ms. This compensates the additional energy requirement of enhanced se-
curity computing and additional payload. The transmission of a subtelegram lasts approxi-
mately 1.2 ms.
3.8 Storing the Rolling code counter
For the enhanced security features a RLC counter needs to be stored in non-volatile memory.
For security reasons the RLC counter is incremented by every transmitted telegram. Together
with the CMAC the RLC ensures that messages cannot be reproduced or forged.
The RLC is stored in the Dolphin chip flash memory. To improve the endurance of the flash
memory and also the energy budget not every increment is saved to the non-volatile flash
memory. During deep sleep the RLC is stored in RAM0 memory.
0.00001
0.0001
0.001
0.01
0.1
1
10
100
010 20 30 40 50 60 70 80 90 100
Time [ms]
Current [mA]

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 18/27
4Application Information
4.1 General Installation Instructions
The small sensor housing can easily be mounted to walls or furniture using the included
double-sided adhesive pad. Using the included metal stand the sensor can be positioned on
horizontal surfaces. One end cap can be replaced by the enclosed triangle cap. To mount the
sensor to walls with uneven ground, for example rough plaster, the sensor can be fixed by
the enclosed mounting plate that was previously fastened to the wall by screws.
To achieve the desired measurement result, avoid direct sunlight on the de-
vice and do not place the device close to HVAC units or similar.
Further important installation notes please find in the Installation Instructions pro-
vided together with the unit.
4.2 Lighting Conditions
4.2.1 Minimum Illumination
◼1200 lxh per day is the minimum illuminance over time of the solar panel that has
to ensured in order to recharge the device for night operation
◼lxh (lux hours) is the multiplication value between illuminance (lux) and time (hours).
This value can roughly be taken as a constant at illuminances greater than 100 lx:
e.g. 200 lx illumination for 6 hours equals 400 lx for 3 hours
◼The value applies to daylight, artificial light and mixed light. Define the minimum
brightness and duration in worst case (averaged over the day). Check the long-term
lighting conditions at the intended location of the device under the most unfavorable
conditions (e.g. winter time)
4.2.2 Local Lighting Conditions
◼Brightness values are highly dependent on the site. Typical values for room type and
placement within a room can be found in the following table and figure. The given
numbers are reference values only. Please use an illuminometer (lux meter) to
verify a particular case. Suited lux meters are available from € 25 upwards from in-
ternet shops.
◼If possible the unit should be mounted with the solar cell facing the window, but
avoiding direct sunlight. With regard to the future use of the room, the installation
site should be chosen so that it cannot be shaded by the user (eg filling cabinets).
◼Determine the best compromise position between the best illuminance and the loca-
tion requirements of the sensor. A place that is not sufficiently illuminated during the
day should be avoided or, if not possible, a CR 1225 battery can be retrofitted.

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 19/27
Illumination Area
Type Destination / Workspace
Typical Brightness
Home
Usually
100 –500 lx
Schools
Corridor
100 –300 lx
Classroom in general
300 –750 lx
Reading room, laboratory
500 –1500 lx
Offices
PC room, working at PC
200 –500 lx
Meeting room
300 –700 lx
Canteen
150 –300 lx
Corridors
50 –100 lx
Reception
300 –700 lx
Restroom
100 –300 lx
Factories
Production hall
500 –1500 lx
Development, office
300 –750 lx
Design CAD
500 –1500 lx
Laboratory, inspection work
750 –1500 lx
Packaging of products
150 –500 lx
Storage
100 –300 lx
Hospitals
Visitor room
300 –500 lx
First aid, surgery
500 –1500 lx
Bedroom
100 –300 lx
Pharmacies
500 –1000 lx
Wash rooms
150 –300 lx
Hotels
Reception
200 –500 lx
Entrance area
100 –300 lx
Restaurant
150 –300 lx
Restroom
100 –300 lx
Bars
50 –150 lx
Corridors
50 –100 lx
Staircases
50 –150 lx
Stores
Saleroom
300 –1000 lx
Show room
500 –1500 lx
Packaging area
200 –300 lx
Lounge
300 –500 lx
Conference room
300 –700 lx
Trade Show
Booth
300 –500 lx
Sports Arena
Indoor area
200 –500 lx
Table: Typical Indoor Brightness Levels (Lux)

USER MANUAL
ETHSA / ETHSU
ENOCEAN TEMPERATURE AND HUMIDITY SENSOR
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 ETHSx User Manual | April 2022 | Page 20/27
Figure: Examples of brightness levels at different spots
in a typical office room (worktable EA=500 lx)
4.2.3 Initial Sensor Operation
To reach full performance the solar-powered energy storage must be recharged after a long
storage in dark (eg at initial installation). This is done automatically from the beginning of
operation in the light and the sensor will reach its full operating state after 3 to 4 days. Then
the sensor will have enough energy to work in dark the whole weekend.
4.3 Installing Supplemental Battery (optional)
If the sensor is installed where the light levels are consistently too low, battery power can be
used to supplement the solar energy harvester. Use CR1225 battery only.
1. Pull off the cap which rests directly at the solar cell.
2. Insert the battery with the larger positive pole (+) directed to the solar cell and slide
it between the two contact terminals (see following figure).
3. Put the cap back on.
NOTE: It is strongly recommended to wear protective gloves while handling coin cell batter-
ies. Failure to do so might result in the formation of a conductive layer on the battery
surface due to skin moisture and a much shorter battery lifetime.
WARNING: Ensure the battery is properly oriented. Improper handling of lithium
batteries may result in heat generation, explosion, or fire.